No， Cristiano Ronaldo has not won the UEFA Champions League. He has been a key player in the Champions League since his arrival at Manchester United in 2003， and has played in the tournament a record 11 times.

Ronaldo has been an integral member of some of the most successful teams in Europe， including Manchester United， Real Madrid and Juventus. He has won the Spanish La Liga twice with Real Madrid and the Italian Serie A four times with Juventus. However， despite his impressive performances in the Champions League， he has never won the tournament outright.

In addition to his individual successes， Ronaldo has been part of some of the most memorable Champions League campaigns in recent years. He scored a dramatic winning goal in the 2009 final against Chelsea and was a key member of the Real Madrid side that won a record three consecutive Champions League titles from 2016 to 2018.

Ronaldo’s individual performances in the Champions League have been outstanding， as evidenced by his record of being the tournament’s all-time top scorer with 134 goals. He has won the Champions League Golden Boot four times， and was the top scorer in the 2016-17 season with 12 goals.

Despite his impressive record， Ronaldo has yet to lift the UEFA Champions League trophy. He will be hoping to do so in the near future and make history as the first player to win the tournament with three different clubs.