Several ships have been named Matsu (松 / まつ, "pine tree"): * Japanese destroyer Matsu (1915), a Kaba-class destroyer of the Imperial Japanese Navy during World War I * Japanese destroyer Matsu (1944), the lead ship of her class during World War II * Matsu-class destroyer, a class of destroyer built for the Imperial Japanese Navy * Japanese submarine I-29, a submarine of the Imperial Japanese Navy, code-named Matsu * JDS Matsu (PF-286), a Kusu-class patrol frigate of the Japan Maritime Self-Defense Force, formerly USS Charlottesville (PF-25)