Abstract: The compression-mounted shower grab bar incorporates a grab bar, a plurality of mounting plates, a plurality of mounting caps, and a shower. The shower further comprises a first wall and a second wall. The compression-mounted shower grab bar is adapted for use by a client. The compression-mounted shower grab bar forms a structure the client can grasp for improved stability. The compression-mounted shower grab bar mounts between the first wall and the second wall of the shower. The plurality of mounting caps secures the grab bar to the plurality of mounting plates. The grab bar applies a compressive force that presses the plurality of mounting plates against the first wall and the second wall such that the grab bar is: a) secured to a fixed position in the shower; and, b) transfers the load of the client to the first wall and the second wall.