| Jeff Cook | |
| Height Ft: | 6 |
| Height In: | 10 |
| Weight Lb: | 215 |
| Birth Date: | 21 October 1956 |
| Birth Place: | West Covina, California, U.S. |
| College: | Idaho State (1974–1978) |
| Draft Year: | 1978 |
| Draft Round: | 3 |
| Draft Pick: | 49 |
| Draft Team: | Kansas City Kings |
| Career Start: | 1978 |
| Career End: | 1991 |
| Career Number: | 45, 44, 12 |
| Career Position: | Power forward / center |
| Years1: | 1978–1979 |
| Team1: | Washington Lumberjacks |
| Years2: | – |
| Team2: | Phoenix Suns |
| Years3: | – |
| Team3: | Cleveland Cavaliers |
| Years4: | – |
| Team4: | San Antonio Spurs |
| Team5: | Utah Jazz |
| Years6: | 1986–1987 |
| Team6: | Boston Livorno |
| Team7: | Phoenix Suns |
| Years8: | 1989–1990 |
| Team8: | Panathinaikos |
| Years9: | 1990–1991 |
| Team9: | AS Monaco |
| Highlights: |
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| Stats League: | NBA |
| Stat1label: | Points |
| Stat1value: | 2,734 (5.3 ppg) |
| Stat2label: | Rebounds |
| Stat2value: | 2,334 (4.5 rpg) |
| Stat3label: | Assists |
| Stat3value: | 707 (1.4 apg) |
Jeffrey James Cook (born October 21, 1956) is a retired American professional basketball player.
A 6'10" center from Idaho State University, Cook played in the National Basketball Association (NBA) from 1979 to 1988 as a member of the Phoenix Suns, Cleveland Cavaliers, San Antonio Spurs, and Utah Jazz. He averaged 5.3 points and 4.5 rebounds in his NBA career.