Thomas Lewis (12 December 1873 – 28 February 1962) was a British trade unionist, local councillor and Labour Member of Parliament (MP).

Lewis was born in the St. Mary's area of Southampton, the son of dock labourer from Jersey in the Channel Islands.

He served on the Borough council until 1961, except for two short breaks totalling 18 months Lewis was selected by Southampton Trades Council to contest the Southampton constituency in the January 1910 General Election but was forced to withdraw through lack of funds.

He lost the seat at the 1931 general election, having been among the Labour MPs who refused to follow the Prime Minister and Labour Party Leader Ramsay MacDonald into a coalition with the Conservatives to form the National Government.

Lewis played a prominent, if sometimes controversial, role in the development of trade unionism in Southampton.