| Seeiso | |
| Succession: | Paramount Chief of Basutoland |
| Reign: | 23 June 1939 – 26 December 1940 |
| Predecessor: | Nathaniel Griffith Lerotholi |
| Issue: | Moshoeshoe II |
| House: | House of Moshoeshoe |
| Birth Date: | 1905 |
| Death Date: | 26 December 1940 |
Seeiso, full name Simon Seeiso Griffith (1905 - 26 December 1940) was the paramount chief of Basutoland from 23 June 1939 until his death. He was the father of king Moshoeshoe II of Lesotho and the paternal grandfather of king Letsie III of Lesotho.[1]