45 Th- names beginning with Th- for boys, listing Th- baby names 1-10. Anthony, Nathaniel, Tad and Thaddeus are popular names. Athanasios, Bartholomew, Thandiwe, Thane, Thatcher and Thaw are uncommon names. View Th- baby names for name meanings, search Th- names for girls by prefix, or search other baby names.