In J. R. R. Tolkien's Middle-earth legendarium, the Kings of Númenor were Dúnedain men who ruled the kingdom of Númenor. Númenor's twenty-five rulers are listed in simple form at List of rulers of Númenor. More details about the reigns of the rulers are given here, for the twenty-three male rulers, including one usurper (Herulcalmo), and at Ruling Queens of Númenor for the female rulers.

Elros Tar-Minyatur (Y.S. 532–S.A. 442, r. S.A. 32–442) is a fictional character of Middle-earth, created by J. R. R. Tolkien. He was born in year 532 of the First Age to Eärendil and Elwing. Elros was one of the Half-elven of Middle-earth who chose to become a mortal man, and was later crowned the first High King of Númenor.

Elros's name may mean "Elf of the Spray" based on a tale from his early childhood. Maedhros and Maglor, in an effort to wrest the Silmaril from Elwing and her people, attacked the settlement at the Mouths of Sirion, slaying many and driving Elwing over the sea. After the battle they found her children, Elros and his twin brother, Elrond, and taking pity on them, they raised them as their foster-children as an act of repentance. They found them in a cave where Elros was playing in a waterfall at the entrance and his brother was hiding in the back of the cave. Thus he was named "Elf of the Spray". In The Silmarillion, Christopher Tolkien interprets Elros as meaning "Star-foam".

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