Cristiano Ronaldo stands as the undisputed leader in UEFA Champions League appearances, having played 183 matches. His extensive career saw him represent Real Madrid (101 appearances), Manchester United (59), and Juventus (23). Ronaldo also holds the record for the most goals scored in the competition. A total of 55 players have surpassed 100 appearances, with an elite eight, including Iker Casillas, Lionel Messi, Thomas Müller, Manuel Neuer, Karim Benzema, Toni Kroos, and Xavi Hernández, exceeding 150 games. Thomas Müller now holds the record for most appearances for a single club, with 163 games for Bayern München, surpassing Xavi Hernández's 151 for Barcelona. Ronaldo, alongside Paolo Maldini, Dani Carvajal, Toni Kroos, and Luka Modrić, shares the record for six Champions League final appearances. He also leads in semi-final, round of 16, and group stage appearances.