Tri-Form is a technique in the Dragon Ball franchise. The Tri-Form technique allows its user to split into three identical duplicates to fight as a group. It is similar to the Multi-Form technique used by Tien Shinhan, which divides its user into four separate beings.
It made its debut in the Dragon Ball Z episode "Princess Snake's Hospitality", used by Piccolo during his training in the Break Wasteland. Piccolo and Krillin later use this technique while fighting Nappa in the episode "Sacrifice".