- Category : 1921-births
- Type : GE
- Profile : 1/3 - Investigating / Martyr
- Definition : Triple Split
- Incarnation Cross : RAX Laws 2
American set designer known for his productions of theatre and ballet, but particularly associated with opera. He designed productions for the Metropolitan Opera from 1960 through 1985.
From 1968 through 1988 O'Hearn was a professor at the New York Studio and Forum of Stage Design. Beginning in 1988 until his retirement in 2008, O'Hearn focused exclusively on teaching at the Jacobs School of Music at his alma mater, Indiana University.
He died in Bloomington, Indiana on 26 May 2016, aged 94.