He is a forward and serves as captain for Portugal
In 2008, he won his first Ballon d'Or and FIFA World Player of the Year awards
He then won the FIFA Ballon d'Or in 2013 and 2014
In 2015, Ronaldo scored his 500th senior career goal for club and country
Often ranked the best player in the world and widely regarded as one of the greatest of all time, Ronaldo was named the best Portuguese player of all time by the Portuguese Football Federation, during its 100th anniversary celebrations in 2015
He is the only player to win four European Golden Shoe awards
One of the most marketable athletes in sport, in 2016 Forbes named Ronaldo the world's best paid athlete
In June 2016, ESPN ranked him the world's most famous athlete
Ronaldo began his club career playing for Sporting CP, before signing with Manchester United at age 18 in 2003
After winning his first trophy, the FA Cup, during his first season in England, he helped United win three successive Premier League titles, a UEFA Champions League title, and a FIFA Club World Cup
By age 23, he had received Ballon d'Or and FIFA World Player of the Year nominations
He was the subject of the most expensive association football transfer when he moved from Manchester United to Real Madrid in 2009 in a transfer worth €94 million ($132 million)
In Spain, he has since won one La Liga title, two Copas del Rey, two Champions League titles, and a Club World Cup
Ronaldo holds the record for most goals scored in a single UEFA Champions League season, having scored 17 goals in the 2013–14 season
In 2014, Ronaldo became the fastest player to score 200 goals in La Liga, which he accomplished in his 178th La Liga game
He is the only player in the history of football to score 50 or more goals in a season on six consecutive occasions
In 2015, Ronaldo became the all-time top goalscorer in the UEFA Champions League, and he also became Real Madrid's all-time leading goalscorer
Ronaldo made his international debut for Portugal in August 2003, at the age of 18
He is Portugal's most capped player of all time with over 130 caps, and has participated in seven major tournaments: four UEFA European Championships (2004, 2008, 2012 and 2016) and three FIFA World Cups (2006, 2010 and 2014)
He is the first Portuguese player to reach 50 international goals, making him Portugal's all-time top goalscorer
He scored his first international goal in Euro 2004 and helped Portugal reach the final
He took over captaincy in July 2008, and he led Portugal to the semi-finals at Euro 2012, finishing the competition as joint-top scorer
In November 2014, Ronaldo became the all-time top scorer in the UEFA European Championship (including qualifying) with 23 goals
At Euro 2016, he became the most capped player of all-time in the tournament, the first player to score at four consecutive European Championship finals, and also equalled Michel Platini's all-time record for most goals scored in the competition
Ronaldo lifted the trophy after Portugal defeated France in the final, and he received the Silver Boot as one of the second-highest goalscorers of the tournament
Ronaldo vs Messi
He is the second highest goalscorer in La Liga history behind Lionel Messi, his perceived career rival
Ronaldo (2015) is a film that takes a close look at Ronaldo's life
Taking into consideration his huge ego, no wonder that Ronaldo's son is named just like him - Cristiano Ronaldo Jr. His mother's identity is kept secret so far, and Ronaldo paid her 10 million pounds for that. We just know she is an American waitress that spent one night with the celebrity.
Ronaldo was expelled from school at the age of 14 for throwing a chair at his teacher. He did that because he said she disrespected him.
Without football, my life is worth nothing.
Talent without working hard is nothing.
In football, I don't have a lot of friends. The people who I really trust, there are not many... Most of the time, I'm alone.
Many people look at me and think they know me but they don't at all. This is the real me. I am a humble person, a feeling person. A person who cares about others, who wants to help others.
I see myself as the best footballer in the world. If you don't believe you are the best, then you will never achieve all that you are capable of