Youngest football (soccer) player in Major League Soccer
- Who
- Cavan Sullivan
- What
- 14:293 year(s):day(s)
- Where
- United States (Chester)
- When
- 17 July 2024
The youngest football (soccer) player in Major League Soccer is Cavan Sullivan (USA, b. 28 September 2009), who was aged 14 years 293 days when he appeared for the Philadelphia Union against the New England Revolution at Suburu Park in Chester, Pennsylvania, USA, on 17 July 2024.
Midfielder Sullivan appeared as an 85th-minute substitute to break the record of DC United’s Freddy Adu from 2004 by 13 days. Philadelphia won the game 5–1. Sullivan became the youngest player ever to debut in a major US team sports league.