| Taberon Dave Honie | 1998 | USA | 1 |
| Tabitha Buck | 1991 | USA | 1 |
| Takahiro Shiraishi | 2017 | Japan | 9 |
| Takuma Nishimura | 1942 - 1945 | Japan | 155 |
| Tamara Mitrofanovna Samsonova | 2000 - 2015 | Russia | 2+ |
| Tan Chee Wee | 2003 | Malaysia | 1 |
| Tan Kheng Ann | 1963 | Singapore / Malaya | 4 |
| Tasmiyah Janeesha Whitehead | 2010 | USA | 1 |
| Tatsuya Ichihashi | 2007 | Japan | 1 |
| Ted Bundy | 1974 - 1978 | USA | 20+ |
| Teet Härm | 1984 | Sweden | 1 |
| Teo Boon Ann | 1983 | Singapore | 1 |
| Teo Kim Hong | 1995 | Singapore | 1 |
| Teresa Wilson Bean Lewis | 2002 | USA | 2 |
| Terri Eden Maples Rachals | 1985 | USA | 6 |
| Terri-Lynne McClintic | 2009 | Canada | 1 |
| Terry Allen Langford | 1988 - 1991 | USA | 3+ |
| Terry Alvin Hyatt | 1979 - 1987 | USA | 3+ |
| Terry Anthony Blair | 1982 - 2004 | USA | 7+ |
| Terry Childs | 1979 - 1985 | USA | 5+ |
| Terry Driver | 1994 - 1995 | Canada | 1 |
| Terry Lee Hankins | 2000 - 2001 | USA | 5 |
| Terry Peder Rasmussen | 1978 - 2002 | USA | 1+ |
| Tetsuya Shiroo | 2007 | Japan | 1 |
| Tetsuyuki Morikawa | 1962 - 1985 | Japan | 3 |
| Thakur Roshan Singh | 1924 | India | 1 |
| Theerasak Longji | 2012 | Thailand | 1 |
| Themba Anton Sukude | 2004 - 2005 | South Africa | 4+ |
| Theodore Edward Coneys | 1941 | USA | 1 |
| Theodore John Kaczynski | 1978 - 1995 | USA | 3 |
| Theodore Maher | 1999 | USA | 2 |
| Theresa Jimmie Francine Knorr | 1984 - 1985 | USA | 2 |
| Thierry Paulin | 1984 - 1987 | France | 18+ |
| Thomas Andrew Williamson | 1868 - 1890 | USA | 4 |
| Thomas C. Dula | 1866 | USA | 1 |
| Thomas Carroll Neal Jr. | 1965 | USA | 1 |
| Thomas Clarke | 1865 - 1867 | Australia | 1-7 |
| Thomas Clyde Bowling Jr. | 1990 | USA | 2 |
| Thomas Dale Ferguson | 1997 | USA | 2 |
| Thomas David Carr | 1860 - 1869 | USA | 1+ |
| Thomas David Lukas Olsen | 2002 | Germany | 1 |
| Thomas Donald Bruce McArthur | 2010 - 2017 | Canada | 8 |
| Thomas Edward Maupin | 1988 - 2001 | USA | 3 |
| Thomas Edwin Blanton Jr. | 1963 | USA | 4 |
| Thomas Eugene Creech | 1974 | USA | 5+ |
| Thomas G. Doty | 1962 | USA | 45 |
| Thomas Harrison Provenzano | 1984 | USA | 3 |
| Thomas Horn Jr. | 1876 - 1903 | USA | 1 |
| Thomas J. Hampton | 1887 - 1893 | USA | 5 |
| Thomas James Sinito | 1975 - 1997 | USA | 1+ |
| Thomas Jeffrey | 1825 - 1826 | United Kingdom | 5 |
| Thomas John Ley | 1946 | United Kingdom | 1 |
| Thomas Joseph Capano | 1996 | USA | 1 |
| Thomas Joseph Grasso | 1990 - 1991 | USA | 2 |
| Thomas Kokoraleis | 1981 - 1982 | USA | 1 |
| Thomas Lee Dillon | 1989 - 1992 | USA | 5 |
| Thomas Martin Thompson | 1981 | USA | 1 |
| Thomas Michael Lane III | 2012 | USA | 3 |
| Thomas Neill Cream | 1881 - 1892 | United Kingdom | 5 |
| Thomas Otis Knight | 1974 | USA | 3 |
| Thomas Richard Bunday | 1979 - 1981 | USA | 5 |
| Thomas Traynor | 1916 - 1921 | Ireland | 2 |
| Thomas W. Piper | 1873 - 1875 | USA | 2-3 |
| Thomas Watt Hamilton | 1996 | United Kingdom | 18 |
| Thomas Wayne Crump | 1980 - 1983 | USA | 4 |
| Thomas Whelan | 1919 - 1921 | Ireland | 1 |
| Thomas Whisenhant | 1963 - 1976 | USA | 4+ |
| Thomas Williams | 1820 - 1831 | United Kingdom | 3 |
| Thomas Young | 1958 | Canada | 5 |
| Thor Christiansen | 1976 - 1979 | USA | 4 |
| Thozamile Taki | 2007 | South Africa | 13 |
| Thug Behram | 1790 - 1840 | India | 125 |
| Thymios Retzos | 1917 - 1926 | Greece | 8+ |
| Tiago Henrique Gomes da Rocha | 2011 - 2014 | Brazil | 11 |
| Tiequon Aundray Cox | 1984 | USA | 3+ |
| Tiffany Ann Cole | 2005 | USA | 2 |
| Tiffany Nicole Moss | 2013 | USA | 1 |
| Tim Kretschmer | 2009 | Germany | 15 |
| Timothy Alvin Humphrey | 2003 | USA | 1 |
| Timothy Baily Hennis | 1985 | USA | 3 |
| Timothy Gerard Hendron | 2010 | USA | 3 |
| Timothy James McVeigh | 1993 - 1995 | USA | 168 |
| Timothy John Boham | 2006 | USA | 1 |
| Timothy Jones Jr. | 2014 | USA | 5 |
| Timothy Joseph McGhee | 1997 - 2001 | USA | 12 |
| Timothy lane Gribble | 1985 - 1987 | USA | 1+ |
| Timothy Lee Hurst | 1998 | USA | 1 |
| Timothy Wayne Krajcir | 1977 - 1982 | USA | 9 |
| Timothy Wilson Spencer | 1984 - 1988 | USA | 5 |
| Tina Lasonya Brown | 2010 | USA | 1 |
| Todd Alan Reed | 1999 | USA | 3 |
| Todd Christopher Kohlhepp | 1986 - 2016 | USA | 7+ |
| Toforest Onesha Johnson | 1995 | USA | 1 |
| Toivo Harald Koljonen | 1943 | Finland | 6 |
| Tommy Lynn Sells | 1979 - 1999 | USA | 22+ |
| Tommy Zethraeus | 1994 | Sweden | 4 |
| Tomohiro Katō | 2008 | Japan | 7 |
| Tomomitsu Niimi | 1989 - 1995 | Japan | 26 |
| Toni Jo Henry | 1940 | USA | 1 |
| Toni Lawrence | 1992 | USA | 1 |
| Tony Ables | 1970 - 1990 | USA | 4+ |
| Tony Costa | 1968 - 1969 | USA | 4+ |
| Too Yin Sheong | 1993 | Malaysia | 1 |
| Tooba Mohammad Yahya | 2009 | Afghanistan | 4 |
| Took Leng How | 2004 | Malaysia | 1 |
| Tore Hedin | 1951 - 1952 | Sweden | 10 |
| Toregeldy Shukurullayevich Zharambaev | 1990 - 1992 | Kazakhstan | 33 |
| Toshihiko Hasegawa | 1979 - 1983 | Japan | 3 |
| Tracey Avril Wigginton | 1989 | Australia | 1 |
| Tracey Marguerite Andrews | 1996 | USA | 1 |
| Tracy Lee Housel | 1985 | Bermuda / United States | 3+ |
| Tracy Walker | 2020 - 2021 | USA | 3 |
| Travis Brandon Baumgartner | 2012 | Canada | 3 |
| Travis James Mullis | 2008 | USA | 1 |
| Trent Christopher Benson | 2004 - 2007 | USA | 2+ |
| Trevor Joseph Hardy | 1974 - 1976 | England | 3 |
| Trevor William Hamilton | 2003 | United Kingdom | 1 |
| Triston Jay Amero | 2006 | USA | 2 |
| Troy Anthony Davis | 1989 | USA | 1 |
| Troy Graves | 1997 - 2001 | USA | 1 |
| Troy Leon Gregg | 1973 | USA | 2 |
| Troy Michael Kell | 1986 - 1994 | USA | 2 |
| Tsutomu Miyazaki | 1988 - 1989 | Japan | 4 |
| Tucker Cipriano | 2012 | USA | 1 |
| Tyler Joseph Hadley | 2011 | USA | 2 |
| Tyrone Delano Gilliam Jr. | 1988 | USA | 1 |
