HKN, Inc., formerly known as Harken Energy Corporation, is a small American oil and gas production company, with ownership interests in other production companies. The company is headquartered in Southlake, Texas, near Fort Worth. There is a second office near Dallas, in the town of Paris. The total number of employees varies. It is at approximately 20 in 2009. Shares with the stock symbol HKN trade publicly on the American Stock Exchange.

Harken Energy Corporation är ett amerikanskt petroleum- och gasföretag baserat i Southlake, Texas. George W. Bush har varit styrelsemedlem i företaget.