The Kaizuka Line (貝塚線, Kaizuka-sen) is an 11.0 km (6.8 mi) Japanese railway line in Fukuoka prefecture, run by the private railway operator Nishi-Nippon Railroad which operates publicly as Nishitetsu.

All services on the Kaizuka Line are Local trains, stopping at all stations.

[4] 2-car Nishitetsu 600 Series [ja] electric multiple unit trains.

[citation needed] In 1986, the Shinhakata to Kaizuka section was closed and replaced by the Fukuoka City Subway Hakozaki Line.

In 2007, the 10 km Nishitetsu Shingū to Tsuyazaki section closed due to declining patronage.