Pro Evolution Soccer 5 (known as Winning Eleven 9 in Japan and World Soccer: Winning Eleven 9 in the North America) is a football video game developed and produced by Konami as part of the Pro Evolution Soccer series. The PlayStation 2 and Xbox versions were released on 21 October 2005 with the PC version released a week later on the 28 October.[2]

With featuring Arsenal and Chelsea it is the first release of the series which offered fully licensed clubs from the Premier League, which is one of the 3 unlicensed leagues of the game. There are also 3 licensed leagues just like in the predecessor Pro Evolution Soccer 4. The game also includes 3 fully licensed leagues, which are the Spanish Liga Española, the Dutch Eredivisie and the Italian Serie A. It was also the first release in the series to include fully licensed national teams - Japan and South Korea.

As with previous versions, the game features an edit mode allowing the player to edit certain elements of the game. It was the last release to feature the German Bundesliga (in the game as German League) before it was replaced by a generic league because of losing the licence for the following releases.

The PlayStation 2 version was the first to feature online play (currently free of charge). Within online play, statistics and league points are stored on the server for each game played. These points determine a team's (player's) position within the five online divisions.