Kepler-129 is a Sun-like G-type star (about 1.18 solar masses, 5,770 K, 1.65 solar radii), 409 light-years from Earth. Kepler-129 b is a 0.06-Jupiter-mass companion, with an orbital period of 15.8 days, at 0.130 AU from its star, discovered in 2014 via transit. Kepler-129 c is a 0.14-Jupiter-mass companion, with an orbital period of 82.2 days, at 0.390 AU from its star, discovered in 2014 via transit. Kepler-129 d is a 8.30-Jupiter-mass companion, with an orbital period of 7.24 years, at 4.000 AU from its star, on an eccentric orbit (e ≈ 0.15), discovered in 2021 via radial velocity.