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- Jewish Theater of New York (New York)
- Jewish Theatre of the South (Dunwoody, Georgia)
- The John Drew Theater (East Hampton, New York)
- The Jungle Theater (Minneapolis, Minnesota)
- Kansas City Repertory Theatre (Kansas City, Missouri)
- The Kavinoky Theatre (Buffalo, New York)
- Kennedy Center - Youth And Family Programs (Arlington, Virginia)
- Kentucky Repertory Theatre (Horse Cave. Kentucky)
- Kentucky Shakespeare Festival (Louisville. Kentucky)
- Kitchen Dog Theater (Dallas, Texas)
- Kitchen Theatre Company (Ithaca, New York)
- L.A. Theatre Works (Venice, California)
- La Jolla Playhouse (La Jolla, California)
- La MaMa Experimental Theatre (New York)
- LAByrinth Theater Company (New York)
- Laguna Playhouse (Laguna Beach, California)
- Lantern Theater Company (Philadelphia, Pennsylvania)
- Lark Play Development Center (New York)
- Lincoln Center Theater (New York)
- Long Wharf Theatre (New Haven, Connecticut)
- Lookingglass Theatre Company (Chicago, Illinois)
- Lord Leebrick Theatre (Eugene, Oregon)
- Los Angeles Women's Shakespeare Company (Los Angeles, California)
- Lost Nation Theater (Montpelier, Vermont)
- The Lyric Stage Company of Boston (Boston, Massachusetts)
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