List of UEFA Champions League hat-tricks

Since the rebranding of the European Champion Clubs' Cup as the UEFA Champions League in 1992, 122 different players from 38 countries have scored three goals or more in a single match (a hat-trick) on 171 occasions, representing 55 clubs from 17 leagues. The first player to achieve the feat was Juul Ellerman, who scored three times for PSV Eindhoven in a 6–0 victory over Žalgiris on 16 September 1992.

Source: Wikipedia — List of UEFA Champions League hat-tricks (CC BY-SA 4.0)