| Honorific-Prefix: | Honourable |
| Jaddy Simai Jaddy | |
| Honorific-Suffix: | MP |
| Office: | Member of Parliament for Mkwajuni |
| Term Start: | November 2010 |
| Birth Date: | 30 June 1963 |
| Nationality: | Tanzanian |
| Party: | CCM |
| Alma Mater: | Taras Shevchenko University |
Jaddy Simai Jaddy (born 30 June 1963) is a Tanzanian CCM politician and Member of Parliament for Mkwajuni constituency since 2010.[1]