Commodore Frederick Dean (1900–1983) was a South African military commander.

During World War I, he served with the Mercantile Marine,[clarification needed] attached to the Royal Navy.

In 1940, he became Officer Commanding of HMSAS Southern Barrier,[2] sweeping the Agulhas Bank, which earned him an OBE.

[1]: 5 From 1942, he was Commanding Officer, Cape Town Detachment, Seaward Defence Force.

This biographical article related to the South African military is a stub.