Chōsokabe Katsuchika served as a bushō during the Muromachi period.
Katsuchika was born as the second son of Chōsokabe Fumikane, a kokujin, or provincial landowner, and the sixteenth head of the clan.
Upon the retirement of his father, Fumikane, the headship of the Chōsokabe clan was inherited by Katsuchika’s older brother, Chōsokabe Motokado, but Fumikane and Motokado had a gradual falling out, whereupon Fumikane ousted Motokado and returned to his position as head of the clan. Later, Katsuchika inherited the clan. In a bid to quell conflict within the clan over the succession, Katsuchika strengthened relations with influential shrines and temples and sent his younger brother for adoption by another family to consolidate the band of retainers.
In 1478, Katsuchika died and was succeeded by his son, Chōsokabe Kanetsugu.