Sunderland South was, from 1950 until 2010, a constituency represented in the House of Commons of the Parliament of the United Kingdom.

The constituency was created by the Representation of the People Act 1948 for the 1950 general election when the existing two-member Sunderland seat was split in two.

Boundaries expanded southwards in line with those of the County Borough, including the gain of Ryhope and Silksworth from Houghton-le-Spring.

Existing boundary with Sunderland North realigned, including the loss of Pallion ward.

Sunderland South was abolished as a result of the Fifth Periodic Review of Westminster constituencies, which took effect at the 2010 election.