The title began with the founding of the Dwarven realm not long after the Awakening of the Dwarves and ended a year after the emergence of the Durin's Bane. The title was restored with Durin VII in the Fourth Age.
A total of nine kings have been recorded in history:
- Durin the Deathless, the founder and first king of the realm ruling from the time before the First Age.
- Durin II, ruled during the time the Dwarves made contact and trade pacts with the Men living in the Vales of Anduin.
- Durin III, ruled during the Second Age when the Dwarves made friends with the Ñoldor of Eregion (Hollin) and the smiths of Ost-in-Edhil, and was given the first of the Seven rings for the dwarves. He closed the realm when the War of the Elves and Sauron began, preserving the Dwarven realm and its people.
- Durin IV, little is known of him save that he may have ruled sometime during Second or Third Ages.
- Durin V, little is known of him save that he may have ruled sometime during Third Age.
- Durin VI, ruled up until the time that the dwarves delved too deep in the earth and released the Balrog Durin's Bane.
- Náin I, the last king before the over one-thousand year abandonment during in which it would be called Moria.
- Balin, Balin's colony didn't last long enough for him to called King of Khazad-dûm and would only be known as Lord of Moria.
- Durin VII, a little known Dwarven noble of Durin's line who refounded the realm sometime in the Fourth Age.