Marco Donadel (born 21 April 1983) is an Italian football midfielder.
Donadel is a youth product of Milan, playing for the youth side between 1998 and 2002, winning the Torneo di Viareggio in 1999 and 2001, before being promoted to the senior side. While on the books of Milan he was loaned to Lecce in July 2002.
In June 2003 Donadel was sold to Parma in a co-ownership deal for €2 million. (with 50% rights of Roberto Massaro was purchased by Milan for €2 million) The deal made Milan making a profit of €3.897 million. In June 2004 Milan bought back 50% rights of Donadel for €800,000 in a four-year contract (Milan booked the contract value of Donadel was €4 million instead of €1.6 million, thus receiving €1.2 million financial income instead of costing Milan to write down the value of retaining 50% registration rights for €1.2 million.) In 2004–05 season Donadel was loaned to Sampdoria for free and finally Fiorentina in January 2005, for €200,000.