Adriaan Gerard Joannes de Bruyn (30 January 1910 – 28 July 1991),[2][3] was a Dutch athlete who competed in the throwing disciplines of the discus, shot put and hammer throw, dominated all three events in the Netherlands in the 1930s and 1940s and was selected for the 1948 Summer Olympics.

[4] Born in the Netherlands, he was the Dutch national shot put champion on multiple occasions, first winning the title in 1932 and repeating the feat in 1934.

He remained champion through to 1944 and regained the title in 1946, holding it until 1949.

[12] He set the Dutch National Record of 14.165m in 1934 and increased this in increments that year up to 14.535m.

[5] De Bruyn died of cardiac arrest while watching the shot-put event on the last day of the Dutch National Championships held 26–28 July 1991 in Eindhoven.