| Unity Theatre | Unity Theatre | 2008 | 10 | |
| University Theatre University of Minnesota, The | The University Theatre University of Minnesota | 1933 – 2006 | 6 | |
| University Theatre University of Illinois, The | The University Theatre University of Illinois | 1951 – 1984 | 6 | |
| University of Melbourne | University of Melbourne | 1970 – 1998 | 5 | |
| Ulmer Theater | Ulmer Theater | 1993 – 2006 | 4 | |
| Universitatea de Artă Teatrală Târgu Mureş | Universitatea de Artă Teatrală Târgu Mureş | 2008 | 4 | |
| Universidad de le Pontificia Universidad Catolica de Chile | Teatro de la Universidad Católica (Universidad de le Pontificia Universidad Catolica de Chile) | 1980 | 3 | |
| University of New South Wales | University of New South Wales | 1982 – 1996 | 2 | |
| U.I.L.T. Unione Italiana Libero Teatro | U.I.L.T. Unione Italiana Libero Teatro | 2024 | 2 | |
| University of Oslo | University of Oslo | 2006 | 2 | 2 |
| Utsen site-specific teater | Utsen site-specific teater | 2013 – 2014 | 2 | |
| UFA | UFA | 1935 | 2 | |
| Università degli Studi di Cagliari | Università degli Studi di Cagliari | 2013 | 2 | 2 |
| University of Dhaka | University of Dhaka | 1998 – 2006 | 2 | |
| University of Texas Department of Drama | University of Texas Department of Drama | 1979 | 1 | |
| University of Arizona | University of Arizona | 1963 | 1 | |
| Ungdomsteatret | Ungdomsteatret | 2006 | 1 | |
| Utan Filter | Utan Filter | 2002 | 1 | |
| University of New South Wales Drama Foundation, The | The University of New South Wales Drama Foundation | 1976 | 1 | |
| Ufimskij russkij dramatičeskij teatr | Ufimskij russkij dramatičeskij teatr (Ufa Russian Dramatic Theatre) | 1964 | 1 | |
| Universitetsteatret | Universitetsteatret | 1994 | 1 | |
| University of Iowa Theater Arts Department | University of Iowa Theater Arts Department | 2005 | 1 | |
| University of Vermont Department of Theatre, The | The University of Vermont Department of Theatre | 2010 | 1 | |
| Universidad de Valladolid | Universidad de Valladolid | 2024 | 1 | |
| University of New Mexico | University of New Mexico | 2002 | 1 | |
| University of Wisconsin Parkside | University of Wisconsin Parkside | 2024 | 1 | |
| Unityone | Unityone | 2008 | 1 | |
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