What is the name of the alien race that Superman belongs to?

The alien race Superman belongs to is the Kryptonians.

Kryptonians are the inhabitants of the planet Krypton, Superman’s destroyed homeworld. Superman was born Kal-El and sent to Earth as an infant by his parents, Jor-El and Lara, shortly before Krypton was destroyed. Raised in Smallville by the human Kent family, he became Clark Kent and eventually Superman.

The Kryptonians are not naturally superpowered in the same way on their own planet. In most versions of the story, Earth’s yellow sunlight gives Superman and other Kryptonians enhanced strength, speed, endurance, senses, flight, and heat vision. Kryptonite, radioactive debris from Krypton, can weaken or seriously harm them.

Superman is often described as an alien from Krypton, but “Kryptonian” identifies his species or heritage rather than his superhero identity. Other notable Kryptonians include Supergirl, whose birth name is Kara Zor-El, and General Zod. This is why answers such as Martians or Thanagarians, despite being other DC alien races, do not fit the question.