Kepler-90g is an extrasolar planet orbiting the star Kepler-90, located in the constellation Draco. It was discovered by the Kepler telescope in October 2013. It is a gas giant planet.

It orbits its parent star at 0.71 AU away, and completes an orbit every 210.60 days.

It was reported that an extrasolar moon may exist on the planet, but was later declared to be a false positive.