| Thormeyer, Rosa | Rosa Thormeyer | Actor | 2021 | 1 | |
| Thorn, John | John Thorn | Actor | 1925 - 1926 | 2 | |
| Thornam, Carl Julius | Carl Julius Thornam (Carl Julius Thornam) | Actor | 1850 - 1866 | 4 | 1 |
| Thorndike, Dan | Daniel Thorndike | Actor | 1959 - 1978 | 3 | |
| Thorndike, Edith | Edith Thorndike (Edith Thorndike) | Actor | 1910 - 1912 | 4 | |
| Thorndike, Edward | Edward Thorndike | Actor | 1958 | 1 | |
| Thorndike, Eileen | Eileen Thorndike | Actor | 1948 | 1 | |
| Thorndike, Russell | Russell Thorndike | Actor | 1922 | 1 | |
| Thorndike, Sybil | Sybil Thorndike | Actor | 1930 - 1952 | 3 | |
| Thorne, Brett | Brett Thorne (Brett Thorne) | Actor | 2003 - 2004 | 2 | |
| Thorne, Gary | Gary Thorne | Designer | 2003 | 1 | |
| Thorne, Jane | Jane Thorne | Actor | 2011 | 1 | |
| Thorne, Stephen | Stephen Thorne | Actor | 1963 | 1 | |
| Thornley, David | David Thornley | Designer | 2003 | 1 | |
| Thornley, Philip | Philip Thornley | Actor | 1930 | 1 | |
| Thorns, Tricia | Tricia Thorns | Actor | 1972 | 1 | |
| Thornton, Andrew | Andrew Thornton | Actor | 2011 | 1 | |
| Thornton, Angela | Angela Thornton | Actor | 2000 - 2001 | 4 | |
| Thornton, Anna | Anna Thornton | Actor | 2018 | 1 | |
| Thornton, Arthur | Arthur Thornton | Actor | 1940 | 1 | |
| Thornton, Ashley | Ashley Thornton | Actor | 2012 | 1 | |
| Thornton, Cyril | Cyril Thornton (Cyril Thornton) | Actor | 1934 - 1935 | 3 | |
| Thornton, Harry | Harry Thornton | Actor | 2011 | 1 | |
| Thornton, Isabel | Isabel Thornton (Isabel Thornton) | Actor | 1915 | 1 | |
| Thornton, Jake | Jake Thornton | Actor | 1991 | 1 | |
| Thornton, Jonne | Jonne Thornton | Designer, Lighting Designer | 1970 | 2 | |
| Thornton, Mark | Mark Thornton | Actor | 2006 | 1 | |
| Thornton, Maureen | Maureen Thornton | Actor | 1982 | 1 | |
| Thornton, Naomi | Naomi Thornton | Actor | 1968 | 1 | |
| Thornton, Sylvia | Sylvia Thornton | Mask Maker | 1988 | 1 | |
| Thoroddsen, Emil | Emil Thoroddsen | Conductor | 1928 | 1 | |
| Thoroughgood, Nicholas | Nicholas Thoroughgood | Director, Lighting Designer | 2020 - 2022 | 3 | |
| Thorp, Kristine | Kristine Thorp (Kristine Thorp) | Director | 2010 | 1 | |
| Thorpe, Courtenay | Courtenay Thorpe (Courtenay Thorpe) | Actor | 1894 - 1907 | 13 | |
| Thorpe, Jonathan | Jonathan Thorpe | Actor | 2000 | 1 | |
| Thors, Katrín | Katrín Thors | Actor | 1954 | 1 | |
| Thorsby, Håvard | Håvard Thorsby (Håvard Thorsby) | Actor | 2009 | 2 | |
| Thorsby, Wenche | Wenche Thorsby | Actor | 1964 | 1 | |
| Thorsdalen, Margit | Margit Thorsdalen | Actor | 1928 | 1 | |
| Thorsen, Benedicte | Benedicte Thorsen (Benedicte Thorsen) | Actor | 2006 | 2 | |
| Thorsen, Joh. | Joh. Thorsen | | | | 1 |
| Thorsen, Karen | Karen Thorsen (Karen Thorsen) | Actor | 1884 | 1 | |
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