| Jack Rule Jr. | |
|---|---|
 Rule with wife Loretta after winning the 1963 St. Paul Open Invitational | |
| Personal information | |
| Full name | Jack D. Rule Jr. |
| Born | November 13, 1938 Mason City, Iowa, U.S. |
| Height | 5 ft 10 in (1.78 m) |
| Weight | 180 lb (82 kg; 13 st) |
| Sporting nationality |  United States |
| Career | |
| College | University of Iowa |
| Turned professional | 1961 |
| Former tour(s) | PGA Tour |
| Professional wins | 5 |
| Number of wins by tour | |
| PGA Tour | 2 |
| Best results in major championships | |
| Masters Tournament | CUT: 1964 |
| PGA Championship | T39: 1964 |
| U.S. Open | T54: 1974 |
| The Open Championship | DNP |
Jack D. Rule Jr. (born November 13, 1938) is an American professional golfer who played on the PGA Tour in the 1960s.