| Otto Geisert | |
| Birth Date: | 18 November 1939 |
| Birth Place: | Nordhorn, Hanover, Prussia, Germany |
| Death Place: | Kaiserslautern, Rhineland-Palatinate, Germany |
| Height: | 1.80 m |
| Position: | Midfielder |
| Years1: | –1962 |
| Clubs1: | Eintracht Nordhorn |
| Years2: | 1962–1965 |
| Clubs2: | Karlsruher SC |
| Caps2: | 45 |
| Goals2: | 10 |
| Years3: | 1965–1970 |
| Clubs3: | 1. FC Kaiserslautern |
| Caps3: | 153 |
| Goals3: | 21 |
| Years4: | 1970–1971 |
| Clubs4: | Charleroi |
| Years5: | 1971–1974 |
| Clubs5: | FC Homburg |
Otto Geisert (18 November 1939 – 8 January 2021) was a German footballer who played as a midfielder.[1] He spent seven seasons in the Bundesliga with Karlsruher SC and 1. FC Kaiserslautern. The best league finish he achieved was a fifth place.
He died on 8 January 2021, aged 81, in Kaiserslautern.[2]