The Hakozaki Line (箱崎線, Hakozaki-sen) is a subway line, which forms part of the Fukuoka City Subway system in the city of Fukuoka, Japan.

The line's color on maps is blue.

Like other Fukuoka City Subway lines, stations are equipped with automatic platform gates, and trains are automatically operated by ATO system.

The line opened on 20 April 1982, initially named "Line 2", operating between Nakasu-Kawabata and Gofukumachi.

[1] The entire line to Kaizuka was opened on 12 November 1986.