Sidi Mohamed Ould Boubacar (Arabic: سيدي محمد ولد بوبكر; born 31 May 1957)[1] is a Mauritanian politician who has been Prime Minister of Mauritania twice, from 1992 to 1996 and again from 2005 to 2007.

[2] Born in Atar in 1957, Sidi Mohamed became regional treasurer in Nouadhibou in April 1983 and then technical adviser to the Minister of Finance and Trade in November 1983.

Sidi Mohamed's appointment came shortly after the resignation of Sghair Ould M'Bareck, Maaouya's last prime minister before he was ousted in a coup.

[15] Like the members of Military Council for Justice and Democracy, Sidi Mohamed was not allowed to run for president in the March 2007 presidential election.

[20] On 22 June 2019, he received 17.87% of the electoral votes behind General Mohamed Ould Ghazouani (52.01%) and activist Biram Dah Abeid (18.58) in the election.