Kepler-54 is an orange K-type dwarf (about 0.51 solar masses, 3,705 K, 0.50 solar radii), 272 light-years from Earth. Kepler-54 d is a planet with 1.5 Earth radii, with an orbital period of 21.0 days, at 0.126 AU from its star, discovered in 2014 via transit. Kepler-54 b is a planet with 2.1 Earth radii, with an orbital period of 8.0 days, discovered in 2012 via transit. Kepler-54 c is a planet with 1.2 Earth radii, with an orbital period of 12.1 days, discovered in 2012 via transit.