To provide a connection member for wire members capable of making connecting portions space-saving and compact when a plurality of wire members are airtightly connected with one of mounting members and simplifying connecting works.

The connection member 1 for wire members comprises the mounting member 10 having a plurality of mounting holes 13, a plurality of pipe members 20, pressing-in members 30 mounted on each pipe member 20, and a pushing member 40 pushing toward a mounting member 10 side. In the connection member 1 for wire members, the plurality of pressing-in members 30 are pressed into the plurality of mounting holes 13 of the mounting member 10 by means of the pushing member 40, and the plurality of pipe members 20 are fixed on the mounting member 10. The outer peripheral surface of each pressing-in member 30 is brought into contact with the mounting hole 13 when each pressing-in member 30 is pressed into each mounting hole 13, and the inner peripheral surface of each pressing-in member 30 is brought into contact with an outer peripheral surface of each pipe member 20.