A letter of the Runic alphabet, present in the Elder Fuþark (as ᛏ), the Anglo-Saxon Fuþorc (ᛏ, called tīr), and the Younger Fuþark (ᛏ, called Týr), representing /t/ and associated with Tyr (in the Icelandic rune poem) and Polaris (in the Anglo-Saxon one).
