| Peter Simako Otlaadisang Mmusi | |
| Office: | Vice-President of Botswana |
| Term Start: | 1983 |
| Term End: | 1992 |
| Predecessor: | Lenyeletse Seretse |
| Successor: | Festus Mogae |
| Office2: | Minister of Finance |
| Term Start2: | 1980 |
| Term End2: | 1989 |
| Predecessor2: | Quett Masire |
| Successor2: | Festus Mogae |
| Birth Date: | 16 May 1929 |
| Birth Place: | Mmankgodi, Botswana |
| Nationality: | Motswana |
| Residence: | Gaborone |
Peter Simako Otlaadisang Mmusi (born 16 May 1929,[1] died October 1994)[2] was the Vice-President of Botswana from 3 January 1983 until 1992. He also served as the Minister of Finance from 1980 to 1989,[3] and as the Minister of Local Government and Lands. He was born in Mmankgodi in the Kweneng District.
He resigned following a Presidential Commission which identified him as taking part in illegal land dealings outside Gaborone.[4]