Three-way connectors are pipe fittings and pipe connectors. Also known as three-way pipe fittings or three-way connectors, they are used at the branching point of the main pipeline.

A three-way fitting is a type of piping component with three openings: one inlet and two outlets; or two inlets and one outlet. It comes in T and Y configurations, with both equal and unequal diameter outlets, used at junctions where three identical or different pipelines converge. The primary function of a three-way fitting is to alter the fluid direction.