Aadan is a Somali politician. He is a former Finance Minister of Somalia, and the current Speaker of the Transitional Federal Parliament (TFP).
Aadan entered politics in 2004 when he was elected speaker of the parliament in Somalia's transitional government. He held that position until 2007 when he was ousted for holding unauthorized talks with members of the Islamic Courts Union.
Aadan was appointed Deputy Prime Minister and Minister of Finance when President Ahmed took office in 2009, and became one of the most prominent figures in the cabinet of former Prime Minister Omar Abdirashid Ali Sharmarke.
In May 2010, the Somali parliament re-elected Aadan as its speaker.
Sharif Hassan Sheikh Aadan was born in 1946 in Bardaale to a family originally from the Bay and Bakool regions.