William Harold Ingrams, OBE CMG (3 February 1897 – 9 December 1973) was a British colonial administrator who served in Zanzibar, Mauritius, the Aden Protectorate, the British Zone in post-WW2 Germany, and the Gold Coast. He is best known for his posting in Mukalla, together with his wife Doreen, where he oversaw the Hadhramaut region and brokered a truce between feuding tribes known as "Ingrams' Peace".
- Arabia and the Isles: Its History and Its People, with a Foreword by Lt-Col Sir Bernard Reilly. John Murray, London, 1942; 3rd edition with an Introduction Covering the Recent Developments in South Western Arabia, Praeger, New York, 1966.
- Seven Across the Sahara, from Ash to Accra, John Murray, London, 1949.
- Hong Kong, HM Stationery Office, London, 1952.
- Uganda: A Crisis of Nationhood, HM Stationery Office, London, 1960.
- The Yemen: Imams, Rulers and Revolutions, John Murray, London, 1963.
- Zanzibar: Its History and Its People, Cass, London, 1967.
- A Winter in Arabia, by Freya Stark
- A Time in Arabia (1970, new edition 2013), by Doreen Ingrams