Secret Valley is a Chinese takeout restaurant in Grand Theft Auto: San Andreas. The player is able to take his girlfriend out on dates to these restaurants. Boxes of Secret Valley fried rice can be found inside most burglary houses, although stores are never found in the game. It's name could have come from Hidden Valley, though highly unlikely as Hidden Valley is a salad dressing brand.
Strangely, if the player utilizes mods in order to enter the Secret Valley's interior, he will fall through the floor because the floor, and most of the interior, is not solid.