Hou or HOU may be

• -hou, a Norman toponymic appellative found mainly in island names
• Hō, an album by Maximum the Hormone
• Houston, Texas
• William P. Hobby Airport’s IATA code
• Hou (侯), a rank of Chinese nobility and a Chinese surname
• Hou (title) (后), title in ancient China equivalent to King/Queen or Emperor/Empress
• Hou (currency) (Chinese: 毫), also known as Jiao (Chinese: 角), a unit of currency in Greater China
• Hou, a town in Aalborg Municipality, Denmark
• Hou, a town in Odder Municipality, Denmark

Wikipedia