| 3 | Rob Revoy | 5-9 | 160 | OF | - | Calgary | | 1988 |
| 16 | Matt Rex | 6-1 | 210 | LHP | - | Murray, UT | Taylorsville High School | 1994-1995 | 1998-2000 |
| Hy Richards | | - | RHP | - | Alberta | | 1955 |
| 20 | Marshall Richey | 6-0 | 190 | OF | - | Mesa, AZ | | 1977-1978 |
| 23 | Jeff Riggins | 6-2 | 175 | 1B | - | Thousand Oaks, CA | | 1971-1972 |
| Joseph Rile | 5-10 | 185 | RHP | - | Twin Falls, ID | | 1957-1958 |
| 16 | Wally Ritchie | 6-2 | 165 | LHP | - | Glendale, CA | Hoover High | 1984 |
| 17 | Kirk Roberts | 6-1 | 170 | RHP | - | Springville, UT | | 1975 |
| 22 | Gary Roberts | 5-10 | 165 | 2B | - | Sunnyvale, CA | | 1965-1966 |
| 3 | Ryan Roberts | 6-3 | 190 | 3B | - | Orem, UT | UVSC | 1995-1996 |
| Glen Roberts | 6-5 | 220 | RHP | - | Bingham, UT | | 1977 | 1979 |
| 24 | Scott Robinson | 5-11 | 210 | C | - | Logan, UT | | 1996-1997 |
| 8 | Dillon Robinson | 6-3 | 210 | 3B | Junior | Pleasant Grove, UT | Lone Peak High School | 2011-2013 |
| 9 | David Rock | 5-10 | 185 | OF | - | Phoenix, AZ | Phoenix College | 1999-2000 |
| Jim Rodda | 5-8 | 160 | SS | - | Berkeley, CA | | 1962 |
| 1 | Dan Roddy | 5-6 | 140 | 2B | - | Rowland Heights, CA | | 1983 |
| 28 | Curtis Rodriguez | 6-0 | 195 | RHP | - | Laguna Niguel, CA | Capistrano Valley High School | 1999 | 2002-2003 |
| 4 | Steven Rodriguez | 5-11 | 160 | INF | - | Laguna Niguel, CA | Capistrano Valley High School | 2006-2007 |
| 26 | John Rogers | 6-4 | 195 | LHP | - | Maywood, CA | | 1992-1993 |
| Denny Rogers | 6-2 | 175 | OF | - | Albuquerque, NM | | 1976 |
| Richard Rolapp | 6-1 | 182 | RHP | - | Beverly Hills, CA | | 1960 |
| Brandon Romney | 6-1 | 180 | RHP | - | Dallas, TX | Woodrow Wilson High School | 2005 |
| 29 | Park Romney | 6-0 | 175 | OF | - | Mesilla Park, NM | | 1975-1976 |
| 30 | Mark Romney | 6-0 | 175 | OF | - | Mesilla Park, NM | | 1975-1976 |
| 18 | Larry Romney | 5-11 | 175 | OF | - | Las Cruces, NM | | 1967-1969 |