The 347th Squadron (Greek: 347 Μοίρα, 347 M), callsign "Perseus" (ΠΕΡΣΕΑΣ), is a squadron in service with the Hellenic Air Force, forming part of the 111th Combat Wing.

The squadron was established in early 1977 as the 347th Bomber Squadron (347 Μοίρα Βομβαρδισμού), at the Souda Air Base (115th Combat Wing).

Once its strength was complete, it moved to 110th Combat Wing at Larissa Air Base on 10 June 1977, with 19 A-7H Corsair aircraft.

[1] The squadron was disbanded on 21 July 1992, and its aircraft handed over to 115 Combat Wing.

The squadron was officially re-established on 7 July 1997 under its current designation, with dual fighter-bomber and interceptor roles.