Thomas James Swiney (1 January 1875 – 15 October 1945) was an Australian politician. He was a member of the New South Wales Legislative Assembly for one term from 1920 until 1922. He was a member of the Labor Party (ALP) . Swiney was born in Balranald, New South Wales and worked as a farmer. At the 1920 election, he was the first candidate on the ALP list and won the third and last position in the multi-member seat of Byron. Swiney was defeated at the 1922 election by 223 votes. He later held positions with the Aboriginal Protection Board. He did not hold ministerial or party office.