- Source: List of unnumbered trans-Neptunian objects: 2020
- List of trans-Neptunian objects
- List of unnumbered trans-Neptunian objects
- List of unnumbered trans-Neptunian objects: 2020
- List of unnumbered trans-Neptunian objects: 2018
- List of unnumbered trans-Neptunian objects: 2017
- Minor-planet moon
- List of minor planets
- List of exceptional asteroids
- List of Solar System objects by greatest aphelion
- List of centaurs (small Solar System bodies)
The following is a partial list of unnumbered trans-Neptunian objects for principal designations assigned within 2020. As of April 2022, it contains a total of 35 bodies. For more information see the description on the main page. Also see list for the previous and next year.