Kepler-203 is a Sun-like G-type star (about 1.06 solar masses, 5,821 K, 1.11 solar radii), 703 light-years from Earth. Kepler-203 b is a planet with 2.6 Earth radii, with an orbital period of 3.2 days, at 0.043 AU from its star, discovered in 2014 via transit. Kepler-203 c is a planet with 2.5 Earth radii, with an orbital period of 5.4 days, at 0.061 AU from its star, discovered in 2014 via transit. Kepler-203 d is a planet with 1.4 Earth radii, with an orbital period of 11.3 days, at 0.100 AU from its star, discovered in 2014 via transit.