2005 Monte Carlo Masters – Singles

Rafael Nadal defeated the defending champion Guillermo Coria in the final, 6–3, 6–1, 0–6, 7–5 to win the singles tennis title at the 2005 Monte Carlo Masters. It was his first Masters title, and the first of eleven titles at the Monte-Carlo Masters and first of an eventual 36 Masters titles. His first round victory against Gaël Monfils marked the beginning of a record 46 consecutive victories at the tournament; he would not lose again until the 2013 final. Nadal became the youngest Masters champion since Michael Chang at the 1990 Canadian Open.

En route to the title, Nadal defeated the previous edition of the French Open's singles runner-up (Guillermo Coria) in the final, singles champion (Gastón Gaudio) in the quarterfinals, both doubles champions (Xavier Malisse in the second round and Olivier Rochus in the third round; ), the mixed doubles champion (Richard Gasquet) in the semifinals, and the boy's champion (Gaël Monfils) in the first round.