The Manus plate is a 100-km-wide tectonic microplate located northeast of New Guinea.

The Manus plate currently rotates counter-clockwise in the Melanesia area.

[1] The Manus plate formed during the Brunhes-Matuyama reversal, making its maximum age approximately 781,000 years old.

[2] The plate was formed of young mid-ocean ridge basalt, along with pieces of older oceanic floor that had broken off of the South Bismarck plate.

The Manus plate currently has a rate of rotation of 51°/ Ma at the spot, -3.04°N, 150.46°E, in the counter-clockwise direction, due to the plates left lateral motion.