Wakamatsu-ku (若松区) is a ward of Kitakyūshū, Fukuoka, Japan.
Important facilities include Green Park, Ecotown recycling area, Gakuen Toshi academic area, and Hibiki container terminal (opened on April 1, 2005).
An underwater tunnel was being constructed in 2005–2006 between Tobata and Wakamatsu wards to link the Hibiki container terminal with Kokura.
Green Park is a large green area which includes a tropical house with rare plants, fish and birds; a herb garden; a rose garden (rare in Japan); a children's play area; a Japanese garden; a wallaby enclosure and boating facilities.
The writer Hino Ashihei was born in Wakamatsu and his birthhouse can be visited.