| John C. Heldt | |
| Birth Date: | 2 May 1900 |
| Birth Place: | Elk River, Iowa, U.S. |
| Death Place: | Alameda, California, U.S. |
| Player Years1: | 1918–1922 |
| Player Team1: | Iowa |
| Player Years2: | 1923 |
| Player Team2: | Columbus Tigers |
| Player Years3: | 1926 |
| Player Team3: | Columbus Tigers |
| Player Positions: | Center, guard |
| Coach Years1: | 1923 |
| Coach Team1: | Ohio |
| Coach Years2: | 1924–1925 |
| Coach Team2: | Waterloo East HS (IA) |
| Coach Years3: | 1926 |
| Coach Team3: | Columbus Tigers |
| Admin Years1: | 1924–1926 |
| Admin Team1: | Waterloo East HS (IA) |
| Overall Record: | 3–5–1 (college) 1–6 (NFL) |
John Claussen Heldt (May 2, 1900 – May 6, 1985) was an American football player and coach. After playing college football at the University of Iowa, in which he was a member of the 1921 All-Western college football team and 1922 All-Western college football team, he served as the head football coach at Ohio University in 1923.[1] Heldt played professionally in the National Football League (NFL) for the Columbus Tigers in 1923 and was a player-coach with the Tigers in 1926.
Heldt played on the Iowa Hawkeyes football team in 1922.[2]
Heldt began his football coaching career with the Ohio Bobcats football team in 1923.[2] He left Ohio for the National Football League and played with the Columbus Tigers in one game during 1923. Heldt returned to the Tigers in 1926 and played six additional games. During the 1926 National Football League season, Heldt was a player-coach for the Tigers and had one win alongside six losses.[3] [4]
During a 1951 accident, Heldt was pinned under a railway car and experienced a fracture to his hip and skull.[5]