Geoffrey of Langley was an English knight and ambassador of the 13th century. He participated in the crusade of Edward I of England in the Holy Land in the years 1270–71.^[1]

Geoffrey de Langley was also sent to the Mongol Il-Khanate court of Ghazan in 1291.^[1] Geoffrey left from Genoa, where he was joined by the Khan's ambassador to the West Buscarel of Gisolfe to go to the Mongol capital of Tabriz.^[1] The embassy is known in some detail because the financial accounts of it have remained.^[1] Geoffrey returned to Genoa on 11 January 1293.^[1]

Geoffrey of Langley was a member of the English knights under Edmond of Lancaster who went to France in 1294.^[1]