| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 501 | Tihkoosue | NativeAmerican | Short (Algonquin). | M | |
| 502 | Tiponi | NativeAmerican | Child of importance (Hopi). | F | |
| 503 | Tis-see-woo-na-tis | NativeAmerican | She who bathes with her knees (Cheyenne). | F | |
| 504 | Tiva | NativeAmerican | Dance (Hopi). | F | |
| 505 | Tocho | NativeAmerican | Mountain lion (Hopi). | M | |
| 506 | Togquos | NativeAmerican | Twin (Algonquin). | M | |
| 507 | Tohopka | NativeAmerican | Wild beast (Hopi). | M | |
| 508 | Tokala | NativeAmerican | Fox (Dakota). | M | |
| 509 | Tooantuh | NativeAmerican | Spring frog (Cherokee). | M | |
| 510 | Totsi | NativeAmerican | Moccasins (Hopi). | F | |
| 511 | Tse | NativeAmerican | Rock (Navajo). | M | |
| 512 | Tsiishch'ili | NativeAmerican | Curly haired (Navajo). | M | |
| 513 | Tuketu | NativeAmerican | Bear making dust (Miwok). | M | |
| 514 | Tupi | NativeAmerican | To pull up (Miwok). | M | |
| 515 | Tuwa | NativeAmerican | Earth (Hopi). | F | |
| 516 | Una | NativeAmerican | Remember (Hopi). | F | |
| 517 | Uzumati | NativeAmerican | Bear (Miwok). | M | |
| 518 | Vaive atoish | NativeAmerican | Alights on the cloud (Cheyenne). | M | |
| 519 | Vaiveahtoish | NativeAmerican | Alights on the cloud (Cheyenne). | M | |
| 520 | Viho | NativeAmerican | Chief (Cheyenne). | M | |