T
- Tandy Bowen
- Tara
- Tarantula - dead
- Teddy Allen
- Thaddeus Aloysius Cadwallader"Dum-Dum"Dugan
- Thaddeus E. "Thunderbolt" Ross
- Thanos
- Thing (Grimm, Benjamin J. "Ben")
- Thing (Marvel Zombies)
- Thor
- Threshold
- Thunderball
- Tinkerer (Stern, Elijah) - dead
- Titanium Man
- Toad (unknown)
- Tom Thumb (Squadron Supreme)
- Trey Langstrom
- Triton
- Tucker Ford
- Tyrone Cash
Read more about this topic: List Of Ultimate Marvel Characters