| Type: | monarch |
| Maad a Sinig Mahecor Joof | |
| Reign: | 1924–1969 |
| Coronation: | 28 January 1924 |
| Succession: | King of Sine |
| Predecessor: | Maad a Sinig Kumba Ndoffene Fa Ndeb Joof |
| Successor: | Monarchy abolished |
| Reg-Type: | Prime Ministers |
| Full Name: | Maad a Sinig Mahecor Joof |
| House: | The Royal House of Semou Njekeh Joof, founded by Maad Semou Njekeh Joof. |
| Birth Place: | Kingdom of Sine, present-day : |
| Religion: | Serer religion |
Maad a Sinig Mahecor Joof (English spelling in the Gambia; variations: Maad a Sinig Mahécor Diouf - French in Senegal; Maad Siin or Mad a Sinig Mahekor Juuf, also Maye Koor Juuf - in Serer-Sine language[1]) was the last king to rule the Serer Kingdom of Sine, now part of independent Senegal. Maad a Sinig means king of Sine in the Serer language. He reigned from 1924 until his death in 1969 (3 August 1969, he died at Diakhao[2]). After his death, the Kingdom of Sine was incorporated into independent Senegal.[3]
Maad a Sinig Mahecor Joof came from the Joof paternal dynasty of Sine and Saloum, from The Royal House of Semou Njekeh Joof (the third and last royal house founded by the Joof family of Sine-Saloum, founded in the 18th century by Maad Semou Njekeh Joof). He was a member of the Guelowar dynasty on his maternal line.[4]
By 1969, Maad Mahecor Joof although retired, was the only ruler in Senegal who possessed real power. The Serer kingdoms such as Sine and Saloum were the only pre-colonial kingdoms to survive up to 1969 (six years after Senegal gained independence from France). The Maad a Sinig (King of Sine) was very committed in the preservation of Serer culture and tradition. During his reign, the Kingdom of Sine was economically prosperous. Indebtedness and migration was rarer in Sine than it was elsewhere in the Senegambia. He performed the traditional role of the Maad a Sinig, presiding over the religious affairs of his subjects and became the focal point of the Sine-Sine (inhabitants of Sine).[5]
In one of his last ever state addresses to his subjects regarding the oral history of Sine, he stated: