| John Popovich | |
| Birth Date: | 6 March 1918 |
| Birth Place: | Monessen, Pennsylvania, U.S. |
| Death Place: | Monongahela, Pennsylvania, U.S. |
| Position1: | Halfback |
| Height Ft: | 5 |
| Height In: | 8 |
| Weight Lb: | 160 |
| College: | Saint Vincent College |
| Playing Years1: | 1944 |
| Playing Team1: | Card-Pitt |
| Playing Years2: | 1945 |
| Playing Team2: | Pittsburgh Steelers |
John Popovich (March 6, 1918 – February 3, 2004) was an American football player and coach. He played in the National Football League (NFL) from 1944 to 1945, for the Pittsburgh Steelers and "Card-Pitt", a team that was the result of a temporary merger between the Chicago Cardinals and the Steelers. The merger was result of the manning shortages experienced league-wide due to World War II. Popovich was signed to "Card-Pitt" midway through the season, after he returned from the Army due to a medical discharge. Popovich served as the head football coach at Waynesburg College—now known as Waynesburg University—in Waynesburg, Pennsylvania from 1955 to 1958, compiling a record of 12–16–4.