425 indexed careers with a surname starting R.
| Player | Years | H | HR | K | Feats |
|---|---|---|---|---|---|
| Ryan Raburn | 2004–2017 | 624 | 93 | 1 | |
| Marv Rackley | 1947–1950 | 151 | 1 | 0 | 2 |
| Dick Radatz | 1962–1969 | 19 | 1 | 747 | |
| Alex Radcliff | 1926–1947 | 472 | 24 | 0 | |
| Rip Radcliff | 1934–1943 | 1,266 | 42 | 0 | 3 |
| Ted Radcliffe | 1928–1949 | 174 | 3 | 113 | |
| Dave Rader | 1971–1980 | 619 | 30 | 0 | 1 |
| Doug Rader | 1967–1977 | 1,302 | 155 | 0 | |
| Scott Radinsky | 1990–2001 | 0 | 0 | 358 | |
| Brad Radke | 1995–2006 | 3 | 0 | 1,467 | |
| Ceddanne Rafaela | 2023–2026 | 438 | 49 | 0 | |
| Ken Raffensberger | 1939–1954 | 96 | 4 | 810 | 6 |
| Pat Ragan | 1909–1923 | 84 | 1 | 679 | |
| Cole Ragans | 2022–2026 | 0 | 0 | 506 | |
| Tim Raines | 1979–2002 | 2,605 | 170 | 0 | 3 |
| Chuck Rainey | 1979–1984 | 12 | 0 | 300 | 1 |
| Ed Rakow | 1960–1967 | 19 | 0 | 485 | |
| Cal Raleigh | 2021–2026 | 550 | 172 | 0 | 2 |
| Luke Raley | 2021–2026 | 307 | 63 | 1 | |
| Doc Ralston | 1910–1910 | 15 | 0 | 0 | 1 |
| Alexei Ramirez | 2008–2016 | 1,387 | 115 | 0 | 1 |
| Aramis Ramirez | 1998–2015 | 2,303 | 386 | 0 | 5 |
| Erasmo Ramirez | 2012–2025 | 2 | 0 | 650 | |
| Hanley Ramirez | 2005–2019 | 1,834 | 271 | 0 | 2 |
| Harold Ramirez | 2019–2024 | 517 | 38 | 0 | 1 |
| Horacio Ramirez | 2003–2011 | 27 | 0 | 318 | |
| Jose Ramirez | 2013–2026 | 1,759 | 295 | 0 | 2 |
| Manny Ramirez | 1993–2011 | 2,574 | 555 | 0 | 3 |
| Rafael Ramirez | 1980–1992 | 1,432 | 53 | 0 | |
| Ramon Ramirez | 2006–2014 | 2 | 0 | 364 | |
| A.J. Ramos | 2012–2021 | 0 | 0 | 430 | |
| Cesar Ramos | 2009–2016 | 0 | 0 | 268 | |
| Domingo Ramos | 1978–1990 | 261 | 8 | 0 | 1 |
| Heliot Ramos | 2022–2026 | 382 | 53 | 0 | |
| Pedro Ramos | 1955–1970 | 109 | 15 | 1,305 | 1 |
| Wilson Ramos | 2010–2021 | 946 | 136 | 0 | |
| Willie Ramsdell | 1947–1952 | 22 | 0 | 240 | |
| Joe Randa | 1995–2006 | 1,543 | 123 | 0 | 4 |
| Bob Randall | 1976–1980 | 341 | 1 | 0 | 2 |
| Lenny Randle | 1971–1982 | 1,016 | 27 | 0 | |
| Willie Randolph | 1975–1992 | 2,210 | 54 | 0 | 1 |
| Goldie Rapp | 1921–1923 | 269 | 2 | 0 | 3 |
| Pat Rapp | 1992–2001 | 29 | 1 | 825 | 1 |
| Bill Rariden | 1909–1920 | 681 | 7 | 0 | 15 |
| Vic Raschi | 1946–1955 | 112 | 1 | 944 | 1 |
| Colby Rasmus | 2009–2018 | 891 | 166 | 0 | 1 |
| Dennis Rasmussen | 1983–1995 | 50 | 0 | 835 | 1 |
| Drew Rasmussen | 2020–2026 | 1 | 0 | 571 | |
| Eric Rasmussen | 1975–1983 | 31 | 0 | 489 | 1 |
| Morrie Rath | 1909–1920 | 522 | 4 | 0 | 3 |
| Doug Rau | 1972–1981 | 58 | 0 | 697 | 1 |
| Jon Rauch | 2002–2013 | 2 | 1 | 475 | 1 |
| Shane Rawley | 1978–1989 | 40 | 0 | 991 | |
| Johnny Rawlings | 1914–1930 | 928 | 14 | 0 | 7 |
| Jim Ray | 1965–1974 | 16 | 0 | 407 | |
| Johnny Ray | 1981–1990 | 1,502 | 53 | 0 | 3 |
| Johnny Ray | 1937–1945 | 139 | 2 | 0 | 1 |
| Robbie Ray | 2014–2026 | 34 | 1 | 1,856 | |
| Floyd Rayford | 1980–1987 | 255 | 38 | 0 | |
| Fred Raymer | 1901–1905 | 300 | 1 | 0 | |
| Bugs Raymond | 1904–1911 | 42 | 0 | 402 | |
| Claude Raymond | 1959–1971 | 11 | 0 | 497 | |
| Colin Rea | 2015–2026 | 6 | 0 | 587 | |
| Randy Ready | 1983–1995 | 547 | 40 | 0 | 1 |
| J.T. Realmuto | 2014–2026 | 1,441 | 189 | 0 | 2 |
| Jeff Reardon | 1979–1994 | 5 | 0 | 877 | |
| Frank Reberger | 1968–1972 | 23 | 0 | 258 | |
| Jeff Reboulet | 1992–2003 | 536 | 20 | 0 | |
| Josh Reddick | 2009–2021 | 1,157 | 146 | 0 | 1 |
| Tim Redding | 2001–2009 | 31 | 0 | 552 | |
| Pete Redfern | 1976–1982 | 0 | 0 | 426 | |
| Mark Redman | 1999–2008 | 8 | 0 | 747 | |
| Tike Redman | 2000–2007 | 385 | 17 | 0 | |
| Mike Redmond | 1998–2010 | 649 | 13 | 0 | 1 |
| Gary Redus | 1982–1994 | 886 | 90 | 0 | 1 |
| Wilson Redus | 1925–1940 | 184 | 10 | 0 | 1 |
| Addison Reed | 2011–2018 | 0 | 0 | 469 | |
| Howie Reed | 1958–1971 | 6 | 1 | 268 | |
| Jeff Reed | 1984–2000 | 774 | 61 | 0 | |
| Jeremy Reed | 2004–2011 | 315 | 12 | 0 | |
| Jerry Reed | 1981–1990 | 0 | 0 | 248 | |
| Jody Reed | 1987–1997 | 1,231 | 27 | 0 | 1 |
| Rick Reed | 1988–2003 | 51 | 2 | 970 | |
| Ron Reed | 1966–1984 | 98 | 0 | 1,481 | |
| Steve Reed | 1992–2005 | 4 | 0 | 630 | |
| Andy Reese | 1927–1930 | 321 | 14 | 0 | 2 |
| Jimmie Reese | 1930–1932 | 206 | 8 | 0 | 2 |
| Pee Wee Reese | 1940–1958 | 2,163 | 126 | 0 | 5 |
| Pokey Reese | 1997–2004 | 703 | 44 | 0 | 1 |
| Rich Reese | 1964–1973 | 512 | 52 | 0 | |
| Bobby Reeves | 1926–1931 | 402 | 8 | 0 | 5 |
| Rob Refsnyder | 2015–2026 | 359 | 37 | 0 | 1 |
| Bill Regan | 1926–1931 | 632 | 18 | 0 | 5 |
| Phil Regan | 1960–1972 | 49 | 1 | 743 | |
| Wally Rehg | 1912–1919 | 189 | 2 | 0 | 1 |
| Frank Reiber | 1933–1936 | 23 | 2 | 0 | 1 |
| Herman Reich | 1941–1949 | 109 | 3 | 0 | 1 |
| Rick Reichardt | 1964–1974 | 864 | 116 | 0 | 1 |
| Dan Reichert | 1999–2003 | 1 | 0 | 240 | |
| Bill Reidy | 1899–1904 | 39 | 0 | 111 | |
| Tom Reilly | 1908–1914 | 16 | 1 | 0 | 1 |
| Kevin Reimer | 1988–1993 | 376 | 52 | 0 | 1 |
| Nolan Reimold | 2009–2016 | 339 | 56 | 0 | 1 |
| Art Reinhart | 1919–1928 | 56 | 0 | 79 | |
| Pete Reiser | 1940–1952 | 786 | 58 | 0 | |
| Doc Reisling | 1904–1910 | 18 | 0 | 102 | |
| Chris Reitsma | 2001–2007 | 9 | 0 | 359 | |
| Heinie Reitz | 1897–1899 | 320 | 4 | 0 | |
| Ken Reitz | 1972–1982 | 1,243 | 68 | 0 | |
| Bryan Rekar | 1995–2002 | 8 | 0 | 383 | |
| Desi Relaford | 1996–2007 | 714 | 40 | 1 | |
| Mike Remlinger | 1991–2006 | 8 | 0 | 854 | |
| Jerry Remy | 1975–1984 | 1,224 | 7 | 0 | 1 |
| Anthony Rendon | 2013–2024 | 1,218 | 158 | 0 | 3 |
| Chico Renfroe | 1945–1949 | 123 | 3 | 0 | 1 |
| Hunter Renfroe | 2016–2025 | 808 | 192 | 0 | 4 |
| Luis Rengifo | 2019–2026 | 646 | 66 | 0 | |
| Hal Reniff | 1961–1967 | 5 | 0 | 314 | |
| Steve Renko | 1969–1983 | 114 | 6 | 1,455 | 4 |
| Bill Renna | 1953–1959 | 219 | 28 | 0 | |
| Edgar Renteria | 1996–2011 | 2,327 | 140 | 0 | 1 |
| Roger Repoz | 1964–1972 | 480 | 82 | 0 | |
| Rip Repulski | 1953–1961 | 829 | 106 | 0 | |
| Xavier Rescigno | 1943–1945 | 9 | 0 | 115 | |
| Merv Rettenmund | 1968–1980 | 693 | 66 | 0 | |
| Ed Reulbach | 1905–1917 | 127 | 1 | 1,148 | 4 |
| Paul Reuschel | 1975–1979 | 2 | 0 | 188 | |
| Rick Reuschel | 1972–1991 | 187 | 4 | 2,015 | |
| Jerry Reuss | 1969–1990 | 171 | 1 | 1,907 | 4 |
| Ben Revere | 2010–2017 | 892 | 7 | 0 | |
| Dave Revering | 1978–1982 | 486 | 62 | 0 | 1 |
| Alberto Reyes | 1995–2008 | 3 | 0 | 422 | |
| Carlos Reyes | 1994–2003 | 0 | 0 | 360 | |
| Dennys Reyes | 1997–2011 | 4 | 0 | 642 | |
| Franmil Reyes | 2018–2023 | 468 | 108 | 1 | |
| Jo-Jo Reyes | 2007–2016 | 9 | 0 | 215 | |
| Jose Reyes | 2003–2018 | 2,138 | 145 | 0 | 2 |
| Nap Reyes | 1943–1950 | 264 | 13 | 0 | |
| Victor Reyes | 2018–2022 | 321 | 16 | 0 | |
| Allie Reynolds | 1942–1954 | 140 | 1 | 1,424 | 4 |
| Bryan Reynolds | 2019–2026 | 1,098 | 153 | 0 | 1 |
| Carl Reynolds | 1927–1939 | 1,357 | 80 | 0 | 3 |
| Craig Reynolds | 1975–1989 | 1,139 | 42 | 1 | 1 |
| Harold Reynolds | 1983–1994 | 1,233 | 21 | 0 | |
| Ken Reynolds | 1970–1976 | 18 | 0 | 197 | |
| Mark Reynolds | 2007–2019 | 1,283 | 298 | 0 | 1 |
| R.J. Reynolds | 1983–1990 | 605 | 35 | 0 | |
| Shane Reynolds | 1992–2004 | 77 | 5 | 1,403 | 1 |
| Tommie Reynolds | 1963–1972 | 265 | 12 | 0 | |
| Armando Reynoso | 1991–2002 | 50 | 3 | 554 | |
| Flint Rhem | 1924–1936 | 88 | 3 | 535 | 2 |
| Billy Rhines | 1897–1899 | 42 | 0 | 119 | |
| Bob Rhoads | 1902–1909 | 121 | 2 | 526 | 1 |
| Rick Rhoden | 1974–1989 | 181 | 9 | 1,419 | 2 |
| Arthur Rhodes | 1991–2011 | 1 | 0 | 1,152 | 1 |
| Dusty Rhodes | 1952–1959 | 296 | 54 | 0 | 2 |
| Gordon Rhodes | 1927–1936 | 69 | 2 | 354 | |
| Tuffy Rhodes | 1990–1995 | 132 | 13 | 0 | 1 |
| Hal Rhyne | 1926–1933 | 508 | 2 | 0 | |
| Dennis Ribant | 1964–1969 | 31 | 0 | 241 | |
| Ben Rice | 2024–2026 | 269 | 68 | 0 | 1 |
| Del Rice | 1945–1961 | 908 | 79 | 0 | |
| Hal Rice | 1948–1954 | 307 | 19 | 0 | |
| Harry Rice | 1923–1933 | 1,118 | 48 | 0 | 7 |
| Jim Rice | 1974–1989 | 2,451 | 382 | 0 | 4 |
| Sam Rice | 1915–1934 | 2,986 | 34 | 12 | 2 |
| Woody Rich | 1939–1944 | 8 | 0 | 42 | 1 |
| Chris Richard | 2000–2009 | 229 | 34 | 0 | |
| Clayton Richard | 2008–2019 | 37 | 3 | 824 | 1 |
| J.R. Richard | 1971–1980 | 93 | 10 | 1,493 | 2 |
| Garrett Richards | 2011–2022 | 1 | 0 | 853 | 1 |
| Gene Richards | 1977–1984 | 1,028 | 26 | 0 | 1 |
| Paul Richards | 1932–1946 | 321 | 15 | 0 | |
| Trevor Richards | 2018–2026 | 5 | 0 | 674 | |
| Bobby Richardson | 1955–1966 | 1,432 | 34 | 0 | |
| Gene Richardson | 1947–1949 | 9 | 1 | 152 | 1 |
| Lance Richbourg | 1921–1932 | 807 | 13 | 0 | 1 |
| Pete Richert | 1962–1974 | 43 | 1 | 925 | 1 |
| Lew Richie | 1906–1913 | 65 | 0 | 445 | 2 |
| Marv Rickert | 1942–1950 | 285 | 19 | 0 | 1 |
| Bill Ricks | 1944–1949 | 43 | 1 | 134 | |
| Harry Riconda | 1923–1934 | 191 | 4 | 0 | 1 |
| Elmer Riddle | 1939–1949 | 69 | 1 | 352 | 2 |
| Marshall Riddle | 1937–1946 | 111 | 2 | 0 | 1 |
| Steve Ridzik | 1950–1966 | 38 | 1 | 407 | |
| John Riedling | 2000–2005 | 4 | 0 | 198 | |
| Shawn Riggans | 2006–2009 | 38 | 7 | 0 | 1 |
| Lew Riggs | 1934–1946 | 650 | 28 | 0 | 1 |
| Dave Righetti | 1979–1995 | 2 | 0 | 1,112 | 2 |
| Bill Rigney | 1946–1953 | 510 | 41 | 0 | 1 |
| Johnny Rigney | 1937–1947 | 70 | 0 | 609 | |
| Topper Rigney | 1922–1927 | 669 | 13 | 0 | 5 |
| Jose Rijo | 1984–2002 | 85 | 2 | 1,606 | 1 |
| Ernie Riles | 1985–1993 | 637 | 48 | 0 | |
| Austin Riley | 2019–2026 | 955 | 184 | 0 | |
| Juan Rincon | 2001–2010 | 1 | 0 | 469 | |
| Ricardo Rincon | 1997–2008 | 0 | 0 | 400 | |
| Jimmy Ring | 1917–1928 | 121 | 4 | 833 | 2 |
| Alex Rios | 2004–2015 | 1,777 | 169 | 0 | 5 |
| Armando Rios | 1998–2003 | 275 | 36 | 0 | |
| Billy Ripken | 1987–1998 | 674 | 20 | 0 | |
| Cal Ripken | 1981–2001 | 3,184 | 431 | 0 | 4 |
| Allen Ripley | 1978–1982 | 15 | 0 | 229 | |
| Jimmy Ripple | 1935–1943 | 510 | 28 | 0 | |
| Swede Risberg | 1917–1920 | 394 | 6 | 0 | 1 |
| David Riske | 1999–2010 | 0 | 0 | 441 | |
| Claude Ritchey | 1897–1909 | 1,617 | 18 | 0 | |
| Todd Ritchie | 1997–2004 | 33 | 0 | 516 | 1 |
| Lew Ritter | 1902–1908 | 315 | 1 | 0 | |
| Kevin Ritz | 1989–1998 | 27 | 1 | 462 | |
| Luis Rivas | 2000–2008 | 541 | 34 | 0 | |
| Ben Rivera | 1992–1994 | 8 | 0 | 219 | |
| Emmanuel Rivera | 2021–2025 | 260 | 22 | 0 | 2 |
| Jim Rivera | 1952–1961 | 912 | 83 | 0 | 3 |
| Juan Rivera | 2001–2012 | 950 | 132 | 0 | |
| Luis Rivera | 1986–1998 | 516 | 28 | 0 | |
| Mariano Rivera | 1995–2013 | 0 | 0 | 1,173 | |
| Rene Rivera | 2004–2021 | 330 | 43 | 0 | |
| Ruben Rivera | 1995–2003 | 343 | 64 | 0 | 1 |
| Felipe Rivero | 2015–2019 | 0 | 0 | 402 | |
| Mickey Rivers | 1970–1984 | 1,659 | 61 | 0 | 1 |
| Eppa Rixey | 1912–1933 | 291 | 3 | 1,352 | 2 |
| Anthony Rizzo | 2011–2024 | 1,643 | 302 | 1 | 2 |
| Johnny Rizzo | 1938–1942 | 496 | 61 | 0 | 2 |
| Phil Rizzuto | 1941–1956 | 1,588 | 38 | 0 | |
| Roxey Roach | 1910–1915 | 151 | 3 | 0 | 2 |
| Tanner Roark | 2013–2021 | 45 | 1 | 936 | |
| Maurice Van Robays | 1939–1946 | 493 | 20 | 0 | 4 |
| Luis Robert | 2020–2026 | 608 | 112 | 0 | |
| Bip Roberts | 1986–1998 | 1,220 | 30 | 0 | 1 |
| Brian Roberts | 2001–2014 | 1,527 | 97 | 0 | |
| Curt Roberts | 1947–1956 | 252 | 3 | 0 | |
| Dave Roberts | 1969–1981 | 103 | 7 | 957 | |
| Dave Roberts | 1999–2008 | 721 | 23 | 0 | |
| Dave Roberts | 1972–1982 | 483 | 49 | 0 | |
| Leon Roberts | 1974–1984 | 731 | 78 | 1 | 1 |
| Robin Roberts | 1948–1966 | 255 | 5 | 2,363 | 2 |
| Ryan Roberts | 2006–2014 | 365 | 46 | 0 | |
| Bob Robertson | 1967–1979 | 578 | 115 | 0 | |
| Charlie Robertson | 1919–1928 | 68 | 0 | 312 | 2 |
| Dave Robertson | 1912–1922 | 814 | 47 | 0 | 8 |
| David Robertson | 2008–2025 | 0 | 0 | 1,176 | |
| Gene Robertson | 1919–1930 | 615 | 20 | 0 | 1 |
| Nate Robertson | 2002–2010 | 6 | 0 | 775 | |
| Rich Robertson | 1966–1971 | 8 | 2 | 184 | |
| Rich Robertson | 1993–1998 | 2 | 0 | 237 | |
| Sherry Robertson | 1940–1952 | 346 | 26 | 0 | 1 |
| Aaron Robinson | 1943–1951 | 478 | 61 | 0 | 1 |
| Bill Robinson | 1966–1983 | 1,127 | 166 | 0 | 1 |
| Brooks Robinson | 1955–1977 | 2,848 | 268 | 0 | 9 |
| Clint Robinson | 2012–2016 | 133 | 15 | 1 | 1 |
| Don Robinson | 1978–1992 | 146 | 13 | 1,251 | 1 |
| Eddie Robinson | 1942–1957 | 1,145 | 172 | 0 | |
| Floyd Robinson | 1960–1968 | 929 | 67 | 0 | 4 |
| Frank Robinson | 1956–1976 | 2,943 | 586 | 0 | 8 |
| Hank Robinson | 1911–1918 | 37 | 0 | 241 | |
| Jackie Robinson | 1945–1956 | 1,551 | 141 | 0 | 4 |
| Jeff Robinson | 1984–1992 | 22 | 2 | 629 | |
| Jeff Robinson | 1987–1992 | 1 | 0 | 425 | |
| Kerry Robinson | 1998–2006 | 196 | 3 | 0 | 1 |
| Neil Robinson | 1934–1949 | 343 | 41 | 0 | 1 |
| Ron Robinson | 1984–1992 | 22 | 0 | 473 | |
| Wilbert Robinson | 1897–1902 | 460 | 1 | 0 | |
| Hansel Robles | 2015–2022 | 0 | 0 | 457 | |
| Victor Robles | 2017–2026 | 515 | 36 | 0 | |
| Mickey Rocco | 1943–1946 | 444 | 30 | 0 | 1 |
| Jack Roche | 1914–1917 | 14 | 0 | 0 | 1 |
| Andre Rodgers | 1957–1967 | 628 | 45 | 0 | 1 |
| Bill Rodgers | 1915–1916 | 65 | 0 | 0 | 1 |
| Brendan Rodgers | 2019–2025 | 471 | 47 | 0 | 1 |
| Buck Rodgers | 1961–1969 | 704 | 31 | 0 | |
| Fernando Rodney | 2002–2019 | 0 | 0 | 942 | |
| Carlos Rodon | 2015–2026 | 2 | 0 | 1,472 | 2 |
| Alex Rodriguez | 1994–2016 | 3,115 | 696 | 0 | 6 |
| Aurelio Rodriguez | 1967–1983 | 1,570 | 124 | 0 | 2 |
| Eduardo Rodriguez | 2015–2026 | 0 | 0 | 1,416 | |
| Eduardo Rodriguez | 1973–1979 | 1 | 0 | 430 | |
| Ellie Rodriguez | 1968–1976 | 533 | 16 | 0 | 2 |
| Felix Rodriguez | 1995–2006 | 4 | 1 | 512 | |
| Francisco Rodriguez | 2002–2017 | 1 | 0 | 1,142 | |
| Frankie Rodriguez | 1995–2001 | 1 | 0 | 371 | 1 |
| Henry Rodriguez | 1992–2002 | 783 | 160 | 0 | 1 |
| Ivan Rodriguez | 1991–2011 | 2,844 | 311 | 0 | 2 |
| Julio Rodriguez | 2022–2026 | 775 | 132 | 0 | 1 |
| Luis Rodriguez | 2005–2011 | 231 | 10 | 0 | |
| Rich Rodriguez | 1990–2003 | 3 | 0 | 396 | |
| Sean Rodriguez | 2008–2020 | 580 | 81 | 1 | 2 |
| Wandy Rodriguez | 2005–2015 | 60 | 0 | 1,281 | |
| Preacher Roe | 1938–1954 | 68 | 1 | 958 | 2 |
| Ed Roebuck | 1955–1966 | 28 | 2 | 475 | |
| Gary Roenicke | 1976–1988 | 670 | 121 | 0 | 1 |
| Ron Roenicke | 1981–1988 | 256 | 17 | 0 | |
| Wally Roettger | 1927–1934 | 556 | 19 | 0 | 2 |
| Billy Rogell | 1925–1940 | 1,375 | 42 | 0 | 3 |
| Esmil Rogers | 2009–2015 | 11 | 0 | 386 | |
| Jake Rogers | 2019–2026 | 220 | 48 | 3 | |
| Kenny Rogers | 1989–2008 | 9 | 0 | 1,968 | 2 |
| Steve Rogers | 1973–1985 | 122 | 0 | 1,621 | 3 |
| Taylor Rogers | 2016–2026 | 0 | 0 | 668 | |
| Tom Rogers | 1917–1921 | 30 | 1 | 98 | |
| Trevor Rogers | 2020–2026 | 3 | 0 | 642 | |
| Tyler Rogers | 2019–2026 | 0 | 0 | 341 | |
| Clint Rogge | 1915–1921 | 15 | 0 | 106 | 1 |
| Saul Rogovin | 1949–1957 | 54 | 3 | 388 | |
| Billy Rohr | 1967–1968 | 0 | 0 | 21 | 1 |
| Ray Rohwer | 1921–1922 | 48 | 3 | 0 | 1 |
| Cookie Rojas | 1962–1977 | 1,660 | 54 | 0 | 1 |
| Josh Rojas | 2019–2026 | 515 | 38 | 1 | 2 |
| Mel Rojas | 1990–1999 | 7 | 0 | 562 | 1 |
| Miguel Rojas | 2014–2026 | 1,038 | 60 | 0 | 1 |
| Stan Rojek | 1942–1952 | 470 | 4 | 0 | |
| Jim Roland | 1962–1972 | 6 | 0 | 271 | |
| Scott Rolen | 1996–2012 | 2,077 | 316 | 0 | 1 |
| Red Rolfe | 1931–1942 | 1,394 | 69 | 0 | 1 |
| Jimmy Rollins | 2000–2016 | 2,455 | 231 | 0 | |
| Rich Rollins | 1961–1970 | 887 | 77 | 0 | |
| Ron Romanick | 1984–1986 | 0 | 0 | 189 | |
| John Romano | 1958–1967 | 706 | 129 | 0 | 4 |
| Bob Romby | 1946–1949 | 30 | 1 | 170 | 1 |
| Ed Romero | 1977–1990 | 473 | 8 | 0 | 1 |
| J.C. Romero | 1999–2012 | 1 | 0 | 526 | |
| Ricky Romero | 2009–2013 | 2 | 0 | 622 | |
| Andrew Romine | 2010–2021 | 294 | 11 | 2 | 1 |
| Austin Romine | 2011–2022 | 311 | 31 | 0 | |
| Eddie Rommel | 1920–1932 | 165 | 1 | 611 | 2 |
| Enrique Romo | 1977–1982 | 10 | 1 | 436 | |
| Sergio Romo | 2008–2022 | 0 | 0 | 789 | |
| Vicente Romo | 1968–1982 | 18 | 1 | 416 | |
| Henri Rondeau | 1913–1916 | 57 | 1 | 0 | 1 |
| Hector Rondon | 2013–2020 | 1 | 0 | 441 | |
| Phil Roof | 1961–1977 | 463 | 43 | 0 | |
| Brent Rooker | 2020–2026 | 522 | 119 | 0 | |
| Jim Rooker | 1968–1980 | 122 | 7 | 976 | 1 |
| Charlie Root | 1923–1941 | 196 | 11 | 1,462 | 2 |
| Jorge de la Rosa | 2004–2018 | 48 | 0 | 1,273 | |
| Rubby de la Rosa | 2011–2017 | 10 | 0 | 356 | |
| Jose Rosado | 1996–2000 | 1 | 0 | 484 | |
| Adam Rosales | 2008–2018 | 367 | 48 | 1 | |
| Buddy Rosar | 1939–1951 | 836 | 18 | 0 | 1 |
| Amed Rosario | 2017–2026 | 1,052 | 79 | 0 | |
| Eddie Rosario | 2015–2025 | 1,064 | 169 | 0 | 3 |
| Wilin Rosario | 2011–2015 | 413 | 71 | 0 | |
| Pete Rose | 1963–1986 | 4,256 | 160 | 0 | 3 |
| John Roseboro | 1957–1970 | 1,205 | 103 | 0 | 2 |
| Dave Rosello | 1972–1981 | 206 | 10 | 0 | |
| Al Rosen | 1947–1956 | 1,063 | 192 | 0 | 1 |
| Goody Rosen | 1937–1946 | 557 | 22 | 0 | |
| Larry Rosenthal | 1936–1945 | 390 | 22 | 0 | |
| Trevor Rosenthal | 2012–2020 | 0 | 0 | 490 | |
| Buck Ross | 1936–1945 | 69 | 3 | 360 | 1 |
| Chet Ross | 1939–1944 | 316 | 34 | 0 | 2 |
| Cody Ross | 2003–2015 | 904 | 132 | 0 | 2 |
| David Ross | 2002–2016 | 521 | 106 | 0 | 3 |
| Don Ross | 1937–1946 | 390 | 12 | 0 | |
| Gary Ross | 1968–1977 | 7 | 0 | 378 | |
| Joe Ross | 2015–2026 | 29 | 0 | 515 | |
| Robbie Ross | 2012–2017 | 0 | 0 | 274 | |
| Tyson Ross | 2010–2019 | 38 | 2 | 816 | |
| Zac Rosscup | 2013–2021 | 0 | 0 | 117 | 1 |
| Claude Rossman | 1904–1909 | 524 | 3 | 0 | 2 |
| Braggo Roth | 1914–1921 | 805 | 30 | 0 | 11 |
| Jack Rothrock | 1925–1937 | 924 | 28 | 0 | 1 |
| Edd Roush | 1913–1931 | 2,376 | 68 | 0 | 2 |
| Jack Rowan | 1906–1914 | 30 | 0 | 270 | |
| Aaron Rowand | 2001–2011 | 1,193 | 136 | 0 | 1 |
| Schoolboy Rowe | 1933–1949 | 239 | 18 | 918 | |
| Bama Rowell | 1939–1948 | 523 | 19 | 0 | |
| Ryan Rowland-Smith | 2007–2014 | 0 | 0 | 229 | |
| Jerry Royster | 1973–1988 | 1,049 | 40 | 0 | |
| Dave Rozema | 1977–1986 | 0 | 0 | 448 | |
| Al Rubeling | 1940–1944 | 186 | 8 | 0 | 1 |
| Dave Rucker | 1981–1988 | 5 | 0 | 170 | |
| Johnny Rucker | 1940–1946 | 711 | 21 | 0 | 1 |
| Michael Rucker | 2021–2026 | 0 | 0 | 158 | 1 |
| Nap Rucker | 1907–1916 | 158 | 1 | 1,225 | 3 |
| Joe Rudi | 1967–1982 | 1,468 | 179 | 0 | 2 |
| Dick Rudolph | 1910–1927 | 132 | 2 | 785 | 1 |
| Don Rudolph | 1957–1964 | 20 | 1 | 182 | |
| Muddy Ruel | 1915–1934 | 1,242 | 4 | 0 | 11 |
| Kirk Rueter | 1993–2005 | 95 | 0 | 818 | 1 |
| Dutch Ruether | 1917–1927 | 250 | 7 | 715 | 1 |
| Darin Ruf | 2012–2023 | 351 | 67 | 0 | |
| Bruce Ruffin | 1986–1997 | 24 | 0 | 843 | 1 |
| Leon Ruffin | 1935–1949 | 167 | 2 | 0 | 1 |
| Red Ruffing | 1924–1947 | 521 | 36 | 1,992 | 2 |
| Justin Ruggiano | 2007–2017 | 343 | 53 | 0 | |
| Vern Ruhle | 1974–1986 | 27 | 0 | 582 | |
| Carlos Ruiz | 2006–2017 | 935 | 71 | 1 | |
| Chico Ruiz | 1964–1971 | 276 | 2 | 0 | |
| Keibert Ruiz | 2020–2026 | 510 | 53 | 0 | |
| Pete Runnels | 1951–1964 | 1,854 | 49 | 0 | 3 |
| Ryan Rupe | 1999–2003 | 1 | 0 | 355 | |
| Cameron Rupp | 2013–2017 | 240 | 39 | 0 | |
| Glendon Rusch | 1997–2009 | 50 | 3 | 1,088 | 1 |
| Bob Rush | 1948–1960 | 141 | 4 | 1,250 | 2 |
| Amos Rusie | 1897–1901 | 70 | 0 | 258 | 1 |
| Chris Rusin | 2012–2020 | 24 | 1 | 341 | |
| Addison Russell | 2015–2019 | 480 | 60 | 0 | |
| Allen Russell | 1915–1925 | 65 | 0 | 610 | |
| Bill Russell | 1969–1986 | 1,926 | 46 | 0 | 2 |
| Jack Russell | 1926–1940 | 102 | 1 | 420 | 2 |
| James Russell | 2010–2016 | 1 | 0 | 243 | |
| Jeff Russell | 1983–1996 | 11 | 1 | 693 | |
| Jim Russell | 1942–1951 | 957 | 67 | 0 | |
| John Russell | 1984–1993 | 245 | 34 | 0 | |
| Reb Russell | 1913–1923 | 261 | 22 | 501 | 3 |
| Rip Russell | 1939–1947 | 344 | 29 | 0 | 1 |
| Marius Russo | 1939–1946 | 50 | 0 | 310 | |
| Babe Ruth | 1914–1935 | 2,873 | 714 | 499 | 4 |
| Dick Ruthven | 1973–1986 | 123 | 1 | 1,145 | 1 |
| Josh Rutledge | 2012–2017 | 284 | 20 | 0 | |
| Adley Rutschman | 2022–2026 | 549 | 70 | 0 | |
| B.J. Ryan | 1999–2009 | 0 | 0 | 625 | 1 |
| Blondy Ryan | 1930–1938 | 319 | 8 | 0 | |
| Brendan Ryan | 2007–2016 | 604 | 19 | 0 | |
| Connie Ryan | 1942–1954 | 988 | 56 | 0 | 3 |
| Jack Ryan | 1898–1913 | 220 | 1 | 0 | |
| Jimmy Ryan | 1897–1903 | 878 | 30 | 0 | |
| Joe Ryan | 2021–2026 | 0 | 0 | 857 | |
| Mike Ryan | 1964–1974 | 370 | 28 | 0 | 1 |
| Nolan Ryan | 1966–1993 | 94 | 2 | 5,714 | 28 |
| Rosy Ryan | 1919–1933 | 51 | 1 | 313 | |
| Mike Ryba | 1935–1946 | 58 | 0 | 309 | 1 |
| Hyun-Jin Ryu | 2013–2023 | 38 | 1 | 934 | |
| Marc Rzepczynski | 2009–2018 | 0 | 0 | 409 |