Teiwaz (tee-woz) is the first rune of the third aett, and the seventeenth overall. Teiwaz is the oldest name of Tyr. The rune is shaped like a spear, or the trunk of the Yggdrasil.

Teiwaz is associated with Mars, a similar god. Unlike Mars, Tyr is always seeking for justice. His battles are righteous.

Teiwaz encourages us to stand up for ourselves, and for justice. It represents courage, honour, integrity, and honesty. Vikings carved this rune on the back of their shields to honour their cause in battle.

Teiwaz works well with Raido as a bind rune, especially for legal issues.