The name "Chayama" originates from the mountain cottage owned by Shirojiro CHAYA, a prosperous merchant of the Edo period, which was once located in the vicinity of the present-day Chayama Station.
茶山という名称は、かつてこの駅の付近にあった江戸時代の豪商「茶屋四郎次郎」の山荘に由来する。