Donkey Kong Country 2: Diddy's Kong Quest is a 1995 platform game developed by Rare and published by Nintendo for the Super Nintendo Entertainment System (SNES). It was released on 21 November 1995 in Japan, 4 December in North America, and 14 December in Europe. It is the second installment of the Donkey Kong Country series and the sequel to Donkey Kong Country (1994).

Players control Diddy Kong and his friend Dixie Kong, who must rescue Donkey Kong after he is kidnapped by King K. Rool. The game is set on Crocodile Isle, with eight worlds of varying environments, totaling 52 levels. The game uses the same Silicon Graphics (SGI) technology from the original, which features the use of pre-rendered 3D imagery.

Diddy's Kong Quest received acclaim, being widely regarded as one of the greatest 2D platformers ever made. Praise was directed at its graphics, gameplay, and soundtrack. It was the second-bestselling game of 1995, the sixth-bestselling game on the SNES, and the highest-selling SNES game that was not packaged with the system.

It was re-released for the Game Boy Advance (GBA) in 2004. The game was made available for download on the Virtual Console for the Wii and Wii U in 2007 and 2015, respectively. It was followed by Donkey Kong Country 3: Dixie Kong's Double Trouble! in 1996.