Aadam Ismaeel Khamis (Arabic: آدم خميس إسماعيل) is a long-distance runner now representing Bahrain after his switch from Kenya. According to Bahraini officials, he was born Hosea Kosgei on 12 February 1989 in Kenya. Like fellow Bahraini runners Belal Mansoor Ali and Tareq Mubarak Taher, his age is surrounded by controversy. In August 2005 the IAAF opened an investigation on their ages which was still ongoing as of March 2007.