| Josef Sedláček | |
| Birth Date: | 15 December 1893 |
| Birth Place: | Vienna, Austria-Hungary |
| Nationalyears1: | 1917 |
| Nationalteam1: | Austria |
| Nationalcaps1: | 1 |
| Nationalgoals1: | 1 |
| Nationalyears2: | 1920–1926 |
| Nationalteam2: | Czechoslovakia |
| Nationalcaps2: | 13 |
| Nationalgoals2: | 6 |
Josef Sedláček (15 December 1893 – 15 January 1985) was a footballer who appeared for both the Austria and Czechoslovakia national teams. He competed at the 1920 Summer Olympics and the 1924 Summer Olympics.[1] [2] On a club level, he played for AC Sparta Prague.[3]