Thomas Abrahams (born 18 April 1946) is a retired South African politician who served in the National Assembly from 1999 to 2004. He was the national treasurer of the United Democratic Movement (UDM) until 1 April 2003, when he crossed the floor to the African National Congress (ANC).

Abrahams was born on 18 April 1946.^[1] He gained election to the National Assembly in the 1999 general election, listed on the UDM's national party list.^[1] At an early stage of the legislative term, he acted as the UDM's chief whip while the incumbent, Sipo Mzimela, took lengthy sick leave.^[2][3] In mid-2001, when Mzimela was suspended from the UDF, he told the press that Abrahams, while acting as chief whip, had been complicit in mismanagement of the party's constituency and parliamentary funds.^[3][4] The UDM denied the allegation and said that Mzimela held a grudge against the party because of his suspension.^[3]

In March 2003, by which time Abrahams was the national treasurer of the UDM, the Mail & Guardian reported that Abrahams was one of several UDM members who was unhappy in the party.^[5] Shortly afterwards, during the floor-crossing window of April 2003, Abrahams and five other MPs resigned from the UDM and joined the governing ANC.^[6][7] He served the rest of his term under the ANC banner and left Parliament after the 2004 general election.