Seven Rings of Power were given to the Dwarves in J.R.R. Tolkien’s legendarium.
The distribution is summarized in the verse about the Rings: three went to the Elves, seven to the Dwarf-lords, nine to mortal Men, and one was made for the Dark Lord himself. The Rings were connected to Sauron’s wider attempt to dominate the peoples of Middle-earth through powerful magical objects.
The Dwarves proved resistant to direct domination. Their Rings could not turn them into wraiths in the same way that the Nine affected Men, but they intensified the Dwarves’ natural desire for wealth. Dragons destroyed or seized several of the Dwarf-rings, while Sauron recovered others.
The seven should not be confused with the three Elven Rings or the nine Rings of Men. The One Ring was separate from those groups and was created in secret to control the others.