Fregattenkapitän (English: Frigate captain) is the middle ranking senior officer in a number of Germanic-speaking navies.

However, following German naval tradition the "Fregattenkapitän" is usually addressed as "Herr/Frau Kapitän" or in seamen's language as "Herr/Frau Kap'tän".

The rank is rated OF-4[2] in NATO, and is equivalent to Oberstleutnant in Heer, and Luftwaffe.

It is domiciled at the A14 and A15 pay scale of the Federal Ministry of Defence and is senior to the rank of Korvettenkapitän (NATO OF-3 - Commander Junior Grade).

[3] Whereas the equivalent ranks (with the same insignia stripes) in Belgium and Denmark are NATO-translated as Commander Senior Grade, the German equivalent is simply termed Commander.