Greg Zipadelli (born April 21, 1967) is an American crew chief in NASCAR. He is currently the competition director at Stewart-Haas Racing. Zipadelli is most notable for being the crew chief of the #20 The Home Depot car for Joe Gibbs Racing drivers Tony Stewart and Joey Logano from 1999 to 2011. He has won 34 races and two championships in 2002 and 2005 as a crew chief. He and his wife, Nanette, have three children.