What god or gods did spartan people worship?

Sparta didn't have a patron god, a god protector of the city (like Athens had Athena).

They worship all 12 gods but they felt closer to Zeus as they considered themselves descendants of Hercules, son of Zeus.

Other gods they worshiped were Apollo, Artemis (known as Artemis Orthia, possibly because her cult joined with the pre-Dorian goddess Orthis) Athena Chalkioikos "of the bronze house" (the temple was decorated in bronze sheets), and Poseidon.