In astronomy, a plutino is a trans-Neptunian object in 2:3 mean-motion resonance with Neptune. For every 2 orbits that a plutino makes, Neptune orbits 3 times. Plutinos are named after Pluto, the largest and the first plutino discovered. The name refers only to the orbital resonance and does not imply common physical characteristics.

In astronomy, a plutino is a trans-Neptunian object in 2:3 mean-motion resonance with Neptune. For every 2 orbits that a plutino makes, Neptune orbits 3 times. Plutinos are named after Pluto, the largest and the first plutino discovered. The name refers only to the orbital resonance and does not imply common physical characteristics.