The 15 cm Kanone 16 (15 cm K 16) was a heavy field gun used by Germany in World War I and World War II.

It generally served on coast-defense duties during World War II.

The K 16 was a thoroughly conventional design for its day with a box trail, steel wheels for motor transport and a curved gunshield.

For transport the barrel was generally detached from the recoil system and moved on its own trailer.

It fired 2 types of high-explosive shells, which differed only in which fuzes they could accept.