- Eldacar (T.A. 87 - 339), fourth King of Arnor and grandson of Isildur.
- Eldacar (T.A. 1255 - 1490), 21st King of Gondor who had to fight for his throne in the Kin-strife.
- "Eldakar" was an early name of both Aragorn II, and his father Arathorn II, in earlier versions of the legendarium.
- Eldacar was a name used on a Decipher Card for one of the Beacon-guards, played by Christian Rivers.