| Honorific-Prefix: | Honourable |
| Ally Keissy | |
| Honorific-Suffix: | MP |
| Office: | Member of Parliament for Nkasi North |
| Term Start: | November 2010 |
| Birth Date: | 15 October 1949 |
| Birth Place: | Tanganyika |
| Nationality: | Tanzanian |
| Party: | CCM |
Ally Mohamed Keissy (born 15 October 1949) is a Tanzanian CCM politician and Member of Parliament for Nkasi North constituency since 2010.[1]