| John B. Law | |
| Birth Date: | February 13, 1905 |
| Birth Place: | Yonkers, New York, U.S. |
| Death Date: | October 14, 1962 |
| Death Place: | Tarrytown, New York, U.S. |
| Player Sport1: | Football |
| Player Years2: | 1926–1929 |
| Player Team2: | Notre Dame |
| Player Years3: | 1930 |
| Player Team3: | Newark Tornadoes |
| Player Positions: | Guard |
| Coach Sport1: | Football |
| Coach Years2: | 1930–1931 |
| Coach Team2: | Manhattan |
| Coach Years3: | 1946 |
| Coach Team3: | Holy Cross (assistant) |
| Coach Years4: | 1947 |
| Coach Team4: | Notre Dame (assistant) |
| Coach Years5: | 1948–1950 |
| Coach Team5: | Mount St. Mary's |
| Coach Sport6: | Baseball |
| Coach Years7: | 1949–1952 |
| Coach Team7: | Mount St. Mary's |
| Admin Years1: | 1949–? |
| Admin Team1: | Mount St. Mary's |
| Overall Record: | 14–23–3 (football) 23–30 (baseball) |
| Championships: | |
| Awards: |
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John Brenden Law (February 13, 1905 – October 14, 1962)[1] was an American football player, coach of football and baseball, and college athletics administrator. He was the third head football coach at Manhattan College and he held that position for two seasons, from 1930 until 1931. His career coaching record at Manhattan was 8–5–2. This ranks him fourth at Manhattan in total wins and first at Manhattan in winning percentage.[2]
A native of Yonkers, New York, Law played college football at the University of Notre Dame and was captain of the undefeated 1929 Notre Dame Fighting Irish football team. After coaching at Manhattan he became the football and baseball coach at Sing Sing prison from 1932 to 1935.[3]
Law also briefly played in the National Football League (NFL), appearing in one game as a starter for the Newark Tornadoes during the 1930 season.[4]