The 2009 Australian Open was a tennis tournament played on outdoor hard courts. It was the 97th edition of the Australian Open, and the first Grand Slam event of the year. It took place at the Melbourne Park in Melbourne, Australia, from 19 January through 1 February 2009. The tournament is remembered for containing many notable matches of the 2009 year, including the Nadal v Verdasco semi final and the Nadal v Federer final. It was the first hard court Grand Slam in which Nadal made the final or won.

The 2009 Australian Open Men's singles final was the championship tennis match of the Men's singles tournament at the 2009 Australian Open. It was contested between the world's top two players for much of the previous four years, Rafael Nadal and Roger Federer, then ranked first and second in the world respectively. It was their seventh of nine meetings in a major final, and their first outside of either the French Open or Wimbledon. This was Nadal's first major hard court final, while it was Federer's ninth and at the time he was yet to lose in a major hard court final.