In J. R. R. Tolkien's fictional universe of Middle-earth, two Kings of Gondor had the name Eärnil:

• Eärnil I, who ruled from 913–936 of the Third Age, and
• Eärnil II, who ruled from 1945–2043.

Tolkien states in the appendix to The Silmarillion, "Elements in Quenya and Sindarin Names", that "Eärnil" is a shortened form of "Eärendil".

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