This list of exoplanets discovered in 2021 is a list of confirmed exoplanets that were first observed in 2021. For exoplanets detected only by radial velocity, the listed value for mass is a lower limit. See Minimum mass for more information.
YSES 2 b had been thought to be a planet after the discovery by direct imaging. Later analysis in 2025 showed that it is a background M-dwarf star instead.