Thomas Owen Jacobsen (23 April 1864 – 15 June 1941) was a British businessman and Liberal politician.

Jacobsen was chosen as the Liberal candidate and was endorsed by the Asquith led Coalition Government.

[6] In 1921, the MP for Southwark South East resigned and Jacobsen was chosen by the local Liberal Progressive and Radical Association to fight the by-election.

[3] The by-election took place on 14 December 1921 when Jacobsen was heavily defeated by Thomas Naylor, leader of the London Labour Party.

[7] Jacobsen retired from the London County Council in 1922, and stood unsuccessfully for the Liberals at Lambeth Kennington at the 1923 general election.