Moktar Ould Daddah (Arabic: مختار ولد داداه, romanized: Mukhtār Wald Dāddāh; December 25, 1924 – October 14, 2003) was the President of Mauritania from 1960, when his country gained its independence from France, to 1978, when he was deposed in a military coup d'etat.

He established a one-party state, with his Mauritanian People's Party being the sole legal political entity in the country, and followed a policy of "Islamic socialism" with many nationalizations of private businesses; in foreign affairs, he joined the Non-Aligned Movement and maintained strong links with Mao Zedong and the People's Republic of China, but he also accepted Western (especially French) foreign aid.