Beihan or Bayhan (Arabic: بيحان Bayḥān), officially the Emirate of Beihan (Arabic: إمارة بيحان Imārat Bayḥān), was a state in the British Aden Protectorate and the Federation of South Arabia. Its capital was Suq Abdulla, now called Beihan. The Emirate was abolished in 1967 upon the founding of the People's Republic of South Yemen and is now part of the Republic of Yemen.