TOI-1338 b is a gas giant circumbinary exoplanet in the constellation Pictor, orbiting around the binary star system TOI-1338.

First identified by then-17-year-old Wolf Cukier, it was the first circumbinary planet discovered by the Transiting Exoplanet Survey Satellite (TESS).

[3][7] Wolf Cukier, a 17-year-old attending Scarsdale High School in New York at the time, joined the Goddard Space Flight Center in 2019 to work as a summer intern.

While studying data that was flagged as an eclipsing binary (provided by volunteers of the Planet Hunters citizen science project), he found the planet on his third day of interning.

[8][9] Its discovery was announced on 6 January at the 235th American Astronomical Society meeting in Honolulu, Hawaii.