Étienne-Joseph de Saint-Germain d'Apchon[Note 1] (1724 — ) was a French Navy officer.
He served in the War of American Independence, and became a member of the Society of the Cincinnati.
[2] He captained the 24-gun frigate Gracieuse in the squadron under Du Chaffault[3][4] for the Larache expedition in 1765.
[2] The year after, he was in command of the 40-gun frigate Atalante, which he sailed to Toulon, Tunis and Malta.
Later that year, he was appointed governor of Fort Lupin, a position he held until 1783.