Yoshisada Shimizu (清水 義定, Shimizu Yoshisada, born 1943) is a Japanese amateur astronomer and a prolific discoverer of hundreds of asteroids since 1993.
An orthopaedist by profession, he is also known as an astrophotographer.
[1][2] The central main-belt asteroid 7300 Yoshisada, discovered by astronomer Takeshi Urata in 1992, was named in his honor.
[2] The official naming citation was published on 18 August 1997 (M.P.C.
30478).