To provide a group delay time compensation band pass filter that compensates a group delay time characteristic so as to reduce an amplitude deviation and a group delay time deviation within a pass band.

Relating to the group delay time compensation band pass filter where first to N(N≥6)-th coaxial resonators are connected in cascade in a channel shape and a magnetic coupling circuit applies major-coupling to the coaxial resonators, let two coaxial resonators placed at a channel shaped loopback point be n(n<N)-th and (n+1)th coaxial resonators respectively, a capacitive element applies sub-coupling between the (n-1)th coaxial resonator 20c and the (n+2)th coaxial resonator 20f and an S-shaped loop 6 applies sub- coupling between the (n-2)th coaxial resonator 20b and the (n+3)th coaxial resonator 20 g.