Gary Steven Roenicke (born December 5, 1954) is an American former Major League Baseball left fielder for the Montreal Expos (1976), Baltimore Orioles (1978–85), New York Yankees (1986) and Atlanta Braves (1987–88).

Roenicke was acquired along with Don Stanhouse and Joe Kerrigan by the Orioles from the Expos for Rudy May, Bryn Smith and Randy Miller at the Winter Meetings on December 7, 1977.

In 1982, he hit .270 with a slugging percentage of .499 in 137 games, platooning with John Lowenstein and Benny Ayala.

He signed as a free agent in 1986 by the Atlanta Braves for less than half the amount of money he had been making ($380,000).

Roenicke resides in Rough and Ready, California, and is currently an adviser for the Western Canadian Baseball League, as well as a scout for the Orioles.