TOI-421 is a Sun-like G-type star (about 0.83 solar masses, 5,291 K, 0.87 solar radii), 74.8 light-years from Earth. TOI-421 b is a 6.7-Earth-mass planet, with an orbital period of 5.2 days, at 0.055 AU from its star, and an equilibrium temperature near 922 K, on an eccentric orbit (e ≈ 0.13), discovered in 2020 via transit. TOI-421 c is a 14.1-Earth-mass planet, with an orbital period of 16.1 days, at 0.117 AU from its star, and an equilibrium temperature near 635 K, on an eccentric orbit (e ≈ 0.19), discovered in 2020 via transit.