Dimitar Kisimov (born 11 April 2008) is a Bulgarian tennis player. He has a career-high ATP singles ranking of No. 1,013 achieved on 28 September 2026.

Career In 2025, Kisimov reached the singles final of the J300 Bradenton Tournament in the United States.

In January 2026, with his junior ranking up to world No. 25, Kisimov made his junior Grand Slam debut, losing to Ntungamili Raguin of Botswana at the 2026 Australian Open. Alongside Connor Doig of South Africa, Kisimov won the boys' doubles at the championships, defeating the Australian pair Ymerali Ibraimi and Cooper Kose in the final. The win came in just their fourth tournament playing together as a partnership.

Kisimov had good results on the ITF junior circuit, maintaining a 128–53 singles win-loss record and reached an ITF junior combined ranking of world No. 9 on 25 May 2026. In July 2026, he was a quarterfinalist in Juniors at the 2026 Wimbledon Championships, losing to Australian Cruz Hewitt.

Junior Grand Slam finals

Doubles: 1 (title) ResultYearTournamentSurfacePartnerOpponents!ScoreWin2026Australian OpenHard Connor Doig Ymerali Ibraimi Cooper Kose6–3, 6–4

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