奥哥波各（Ogopogo）是一种传说生存在加拿大奥卡纳干湖（Okanagan Lake）的湖怪，奥哥波各这个名称是从印地安人的Naitaka而来，意为「水中的恶魔」。

• 天池水怪
• 尼斯湖水怪
• 河克尔顿

Ogopogo or Naitaka (Salish:n'ha-a-itk, "lake demon") is the name given to a cryptid lake monster reported to live in Okanagan Lake, in British Columbia, Canada. Ogopogo has been allegedly seen by First Nations people since the 19th century. The most common description of Ogopogo is a 40 to 50-foot-long (12 to 15 m) sea serpent. Lake monster investigator Benjamin Radford notes “however, that these First Nations stories were not referring to a literal lake monster like Ogopogo, but instead to a legendary water spirit. The supernatural N’ha-a-itk of the Okanagan Valley Indians is long gone.”