August Holmgren (born 22 April 1998) is a Danish professional tennis player. He has a career high ATP singles ranking of world No. 163 achieved on 19 August 2024 and a doubles ranking of No. 296 achieved on 17 July 2023. He is currently the No. 3 Danish player. Holmgren has represented Denmark at the Davis Cup making his debut in 2017, and has a win-loss record of 7–3.