Karel Mustmaa (born 8 August 2005) is an Estonian professional footballer who plays as a winger or forward or Greek Super League 2 club PAOK B and the Estonia national team.
As a youth player, Mustmaa joined the youth academy of Estonian side Harju and was promoted to the club's senior team in 2021, where he made six league appearances and scored four goals.
Following his stint there, he joined the youth academy of Portuguese side Benfica the same year, where he played in the UEFA Youth League. Ahead of the 2025âÂÂ26 season, he signed for Greek side PAOK B.
Mustmaa is an Estonia youth international. During the autumn of 2025, he was first called up to the Estonia national football team for 2026 FIFA World Cup qualification.
Mustmaa plays as a winger or forward and is left-footed. Estonian news website Soccernet.ee wrote in 2025 that his "trump cards are quick openings and runs. In the past, he has also boasted of winning duels, as he can often put his foot in the right place and grab the ball".