Gregory C. Zipadelli, nicknamed "Zippy", (born April 21, 1967) is an American crew chief and team executive in NASCAR.

Zipadelli began his career in the NASCAR Whelen Modified Tour series, becoming the crew chief for his family's team and immediately winning a championship with driver Mike McLaughlin in 1988, at the age of 21.

[citation needed] In 1999, he joined Joe Gibbs Racing, partnering with IndyCar Series champion turned NASCAR rookie Tony Stewart.

Their accomplishments include the 1999 Rookie of the Year title, winning a rookie-record 3 races,[1] three Chase for the NEXTEL Cup appearances, and two championships in 2002 and 2005.

In December 2011, Zipadelli moved to Stewart-Haas Racing to reunite with Stewart, but as competition director, not as a crew chief.