Brian Marshall Allard (born January 3, 1958) is an American former Major League Baseball pitcher who played for the Texas Rangers (1979-1980) and Seattle Mariners (1981).

Allard was selected by Texas Rangers in fourth round, 84th overall, of 1976 Major League Baseball Draft.

On December 12, 1980, Allard was traded by the Rangers along with Steve Finch, Rick Auerbach, Ken Clay, Jerry Don Gleaton and Richie Zisk to the Seattle Mariners for Larry Cox, Rick Honeycutt, Willie Horton, Mario Mendoza and Leon Roberts.

Allard out dueled Barker, combining with relief pitcher Shawn Rawley to pitch a three-hit game.I was pumped, I knew it would be a tough battle.

You just knew [Len Barker] would pitch well.Allard went on to finish the '81 season with a 3–2 record with a 3.75 ERA in seven games, all for starts.