Sudanese Socialist Union

The Sudanese Socialist Union (abbr. SSU; الاتحاد الاشتراكي السوداني Al-Ittihad Al-Ishtiraki As-Sudaniy) was a political party in Sudan. The SSU was the country's sole legal party from 1971 until 1985, when the regime of President Gaafar Nimeiry was overthrown in a military coup.

Today the Sudanese Socialist Democratic Union, the successor party to the SSU, exists as a registered political party in Sudan. Until 2018, it was led by Professor Dr. Fatima Abdel Mahmoud, who was Sudan's first female minister during the presidency of Gaafar Nimeiry as well as a former member of the National Congress Party. Professor Dr. Fatima Abdel Mahmoud was the first woman to contest the presidency of Sudan in the 2010 general election.