To provide a circular multi-port joint capable of providing a uniform flow rate and uniform pressure, and miniaturizing pressure equipment.

This circular multi-port joint 1 has a circular main body 2; a main pipe joint 22 connected to a piping main 3, projecting outward in a radial direction of the main body 2; and plural head joints 23 each projecting a direction perpendicular to the main pipe joint 22, provided on the periphery of the main body 2 at even intervals. A circular flow passage 21 is formed in the main body 2 such that the circular flow passage 21 communicates the main pipe joint 22 with the plural head joints 23.