Robert Barry Bonnell (born October 27, 1953) is an American former outfielder in Major League Baseball (MLB).

Bonnell was a star athlete at Milford High School near Cincinnati, Ohio, where he played both varsity baseball and basketball on championship teams.

Following high school graduation in 1971, Bonnell attended OSU on a full athletic scholarship where he played both baseball and basketball.

Traded to the Seattle Mariners in 1984, he contracted Valley fever during spring training, and developed pneumonia.

Bonnell is a devout member of the Church of Jesus Christ of Latter-day Saints, and he introduced Braves teammate, Dale Murphy, to the faith.