Vice-Admiral Sir Thomas Francis Fremantle, 1st Freiherr von Fremantle, was a British naval officer in the Royal Navy whose accolades include three separate fleet actions, a close friendship with Lord Nelson, and a barony in Austria. He was the father of Admiral Sir Charles Fremantle, after whom the city Fremantle, in Western Australia, is named.

Admiral Sir Charles Howe Fremantle GCB RN was a British Royal Navy officer. The city of Fremantle, Western Australia, is named after him.