OGLE-2018-BLG-0596L is a Sun-like G-type star (about 0.23 solar masses, 5,778 K), 5,650 light-years from Earth. OGLE-2018-BLG-0596L b is a 13.9-Earth-mass planet, at 0.970 AU from its star, discovered in 2019 via microlensing. Microlensing detections occur when a foreground star's gravity briefly magnifies a background source, revealing planets that are otherwise too faint and distant to observe directly. OGLE-2018-BLG-0596L b circles its star within the inner habitable zone. Its low mass makes OGLE-2018-BLG-0596L b a Neptune- or super-Earth-class world rather than a gas giant. At roughly 5,650 light-years, OGLE-2018-BLG-0596L lies far beyond the nearest stars yet remains reachable to large survey telescopes.