The PlayStation 2 (PS2) is a home video game console developed and marketed by Sony Computer Entertainment. It was first released in Japan on 4 March 2000, in North America on 26 October 2000, in Europe on 24 November 2000, in Australia on 30 November 2000, and other regions thereafter. It is the successor to the original PlayStation console, as well as the second installment in the PlayStation brand of consoles. As a sixth-generation console, it competed with Nintendo's GameCube, Sega's Dreamcast, and Microsoft's Xbox. It is the best-selling video game console of all time, having sold over 160 million units worldwide, nearly triple the combined sales of its competing consoles.

Announced in 1999, Sony began developing the console after the immense success of its predecessor. 

The highlight of the system was its Emotion Engine processor, co-developed by Sony and Toshiba, which was said to be more powerful than personal computers. The PS2 offered backward-compatibility for its predecessor's DualShock controller, as well as its games.

The PlayStation 2 received widespread critical acclaim upon release. A total of over 4,000 game titles were released worldwide, with over 1.527 billion copies sold. In 2004, Sony revised the console with a smaller, lighter body officially known as the Slimline, popularly called the "PS2 Slim". Even after the release of its successor, the PlayStation 3, it remained popular well into the seventh generation. It continued to be produced until the beginning of 2013 when Sony finally announced that it had been discontinued after over twelve years of production, one of the longest lifespans of any video game console. New games for the console continued to be released until shortly after the end of its life and support from Sony.