As coach Ronald William Hassey (born February 27, 1953) is an American former professional baseball player.

Hassey is notable for being the only catcher in MLB history to have caught more than one perfect game (his first was with Len Barker in 1981[2] and his second with Dennis Martínez in 1991[3]).

Hassey joined Gus Triandos as the only catchers in MLB history to have caught a no-hitter in both leagues.

Hassey's father also played for Tucson High Magnet School and the University of Arizona.

He played for the San Jose Bees, the Williamsport Tomahawks, the Toledo Mud Hens, and the Portland Beavers.

On May 15, 1981, Hassey caught starting pitcher Len Barker's perfect game against the Toronto Blue Jays.