Ali Modu Sheriff (born 1956) is a Nigerian politician. He is Borno State's first governor to serve two consecutive terms (2003–2011). Though Sheriff had held two elected offices as a member of All Nigeria People's Party, he would later join the All Progressives Congress becoming a founding member of that party. In 2014, Sheriff switched affiliation to the People's Democratic Party. He acted as the National Working Committee chair from 16 February 2016 until the National Convention, when he was removed and replaced by Ahmed Makarfi. On 26 April 2018 he defected back to All Progressives Congress