Kaylan Bigun
| Bigun in 2023 | |
| Country (sports) | United States | 
|---|---|
| Born | May 23, 2006 Los Angeles, California, U.S. | 
| Height | 183 cm (6 ft 0 in) | 
| Plays | Left-handed (two-handed backhand) | 
| Prize money | US $37,664 | 
| Singles | |
| Career record | 0–0 (at ATP Tour level, Grand Slam level, and in Davis Cup) | 
| Career titles | 0 | 
| Highest ranking | No. 765 (February 17, 2025) | 
| Current ranking | No. 773 (March 3, 2025) | 
| Grand Slam singles results | |
| US Open | Q1 (2024) | 
| Australian Open Junior | QF (2024) | 
| French Open Junior | W (2024) | 
| Wimbledon Junior | QF (2023, 2024) | 
| US Open Junior | QF (2024) | 
| Doubles | |
| Career record | 0–0 (at ATP Tour level, Grand Slam level, and in Davis Cup) | 
| Career titles | 0 | 
| Highest ranking | No. 1740 (December 4, 2023) | 
| Grand Slam doubles results | |
| Australian Open Junior | SF (2024) | 
| French Open Junior | QF (2024) | 
| Wimbledon Junior | SF (2024) | 
| US Open Junior | 1R (2023) | 
| Grand Slam mixed doubles results | |
| US Open | 2R (2024) | 
| Last updated on: March 3, 2025. | |
Kaylan Bigun (born May 23, 2006) is an American tennis player. He has a career-high ATP singles ranking of world No. 765, achieved on February 17, 2025.
After winning the boys' singles title at the 2024 French Open, he reached a ITF junior combined ranking of No. 1 on June 10, 2024.