Thomas Patrick O'Malley (born December 25, 1960 in Orange, New Jersey) is a former Major League baseball player born in Orange, New Jersey, and raised in Montoursville, Pennsylvania in the United States. He played for the San Francisco Giants, Chicago White Sox, Baltimore Orioles, Texas Rangers, Montreal Expos, and New York Mets. He also spent six highly successful seasons in the Japanese Central League with the Hanshin Tigers and Yakult Swallows. He also worked as a manager for the Newark Bears in the Atlantic League of Professional Baseball after retiring.