1. Kathlaniidae Lane 1914
2. Kingenidae Elliott 1948
3. Kiyohimeidae Komai & Tokioka 1940
4. Koleolepadidae Hiro 1933
5. Kraemeriidae Whitley 1935
6. Kraussinidae Dall 1870
7. Kuhliidae Jordan & Evermann 1896
8. Kyphosidae T.N. Gill 1893