Zachary Blue Greene (born August 29, 1996) is an American professional baseball pitcher for the Scranton/Wilkes-Barre RailRiders.
Greene attended Atlantic Coast High School and St. Johns River State College. He was selected by the Miami Marlins in the 15th round of the 2018 MLB Draft. Instead of signing, he transferred to the University of South Alabama, where he was named a second-team All-American. The New York Yankees selected Greene in the eighth round, 255th overall, in the 2019 MLB draft.
The New York Mets selected Greene from the Yankees in the 2022 Rule 5 draft.