| Hōjō Sadaaki Japanese: 北条 貞顕 | |
| Office: | Shikken |
| Term Start: | 19 April 1326 |
| Term End: | 29 April 1326 |
| Predecessor: | Hōjō Takatoki |
| Successor: | Hōjō Moritoki |
| 1Blankname: | Shōgun |
| 1Namedata: | Prince Morikuni |
| Office1: | Rensho |
| Term Start1: | 1315 |
| Term End1: | 1326 |
| Predecessor1: | Hōjō Hirotoki |
| Successor1: | Hōjō Koresada |
| Birth Date: | 1278 |
| Spouse: | daughter of Hōjō Tokimura |
| Father: | Hōjō Akitoki |
| Mother: | Iri-dono |
was the 12th rensho (1315–1326) and 15th shikken (19 April 1326 – 29 April 1326) of the Kamakura shogunate.[1]