Elladan and Elrohir are fictional characters in J. R. R. Tolkien's Middle-earth, the twin sons of Elrond Half-elven and Celebrían. They were born in T.A. 130 and they have a younger sister Arwen.

The brethren were friends and companions-in-arms of the Rangers of the North, and helped defend the remnants of Arnor from evil after the fall of the northern kingdom. They held a special grudge against Orcs because of their mother's suffering at their hands. During the War of the Ring, they fought alongside Aragorn in the battle of the Pelennor Fields in Gondor.

Like their sister, they could make a choice between mortality and immortality, expressed by whether they would follow their father to Valinor at the time of his own departure at the end of the Third Age. Since they are explicitly described as remaining to Rivendell for a time after their father's departure, some fans speculated that they had also chosen mortality. However J. R. R. Tolkien himself noted that the twins were allowed to "delay" their choices.

Elladan's name means "Elf-Man", or rather "Elf-Dúnadan": referring to his dual descent from both Elves and Men (Edain). Elrohir means "Elf-knight", apparently in honour of his prowess in arms.

Elladan and Elrohir did not make an appearance in Peter Jackson's Lord of the Rings movie trilogy.

Line of the Half-elven

 Fingolfin Galdor Thingol = Melian | | | | | (1) | Turgon Huor Beren = Lúthien | (2) | | Idril ======= Tuor Dior = Nimloth | | | ------------- | | | Eärendil ======== Elwing Eluréd and Elurín | ------------------ | | Elros Elrond = Celebrían | | Kings of Númenor | : | Elendil | : | Dúnedain in Middle-earth | : --------------- : (3) | | Aragorn ========= Arwen Elladan and Elrohir | Eldarion 

The marriages between Men and Elves are numbered.