Ah Meng (1960–2008), Sumatran Orangutan of Singapore
Ken Allen (1971–2000) was a Bornean orangutan at the San Diego Zoo known for his escape artistry. He unscrewed bolts with his fingers, reached around things and climbed steep walls to find temporary freedom. When keepers discovered and closed one of his escape routes he would find another. At least once he was found out among zoo visitors and was led by the hand to a keeper by a visitor. Ken Allen died in 2000.
Tom (born 1983) is the famous king of Orangutan in Camp Leakey, Tanjung Puting. Most of the visitors that visit the conversation are looking to see Tom. Even one of a big soft drink brand in Indonesia held a contest about finding Tom the king of Orangutan. 
In the Rob Schneider movie The Animal, Rob's character gets involved in a slapping fight and eventually wrestles with an orangutan.
In Patrick O'Brian's novel The Thirteen Gun Salute, thirteenth book of the Aubrey-Maturin series, Stephen Maturin is accompanied during his stay at a Buddhist monastery by an elderly female orangutan named Muong.
Michael Crichton's novel Next features a transgenic orangutan in Sumatra that speaks French and Dutch.
In Donkey Kong 64Lanky Kong is a Sumatran orangutan who uses his very long arms to good effect to reach otherwise out-of-bounds areas (in fact, there is a glitch in the game such that by very careful positioning of Lanky using the move he can open and enter doors that are supposed to be locked behind a keeper by touching them). A potion also enables him to do OrangStand, walking on his hands to climb steep slopes. He also appears in other related games such as Super Smash Bros. Brawl.
In Metal Slug 3, an unnamed AI-controlled orangutan wearing diapers may appear to aid the player on killing zombies with a weapon similar to an UZI