Keio Academy of New York (慶應義塾ニューヨーク学院, Keiō Gijuku Nyūyōku Gakuin; Keio NY) is a private high school in Purchase, Harrison, New York, in the New York City metropolitan area. It is sponsored by Keio University, making it an overseas branch of a Japanese private school, or a Shiritsu zaigai kyōiku shisetsu (私立在外教育施設).

After the retirement of the Head of School, Ralph Townsend who served from August 2019, the executive director, Motohiro Tsuchiya (vice-president of Keio University) concurrently served. Later, Takayuki Tatsumi, Professor Emeritus of Keio University, was appointed as the Headmaster in January 2022.