Mark Dwayne Ryal (born April 28, 1960) is an American former professional baseball player who played six seasons; for the Kansas City Royals, Chicago White Sox, California Angels, Philadelphia Phillies, and Pittsburgh Pirates of Major League Baseball (MLB).

He also played two seasons in the Nippon Professional Baseball (NPB) for the Chunichi Dragons.

Ryal attended Dewar High School and was selected in the third round (77th overall) by the Kansas City Royals in the June 1978 amateur Baseball draft.

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