Eru Ilúvatar is a fictional character in J.R.R. Tolkien's Middle-earth legendarium. He is introduced in The Silmarillion as the supreme being of the universe, creator of all existence. In Tolkien's invented Elvish language Quenya, Eru means "The One", or "He that is Alone" and Ilúvatar signifies "Father of All". The names appear in Tolkien's work both in isolation and paired (Eru Ilúvatar).

Eru Ilúvatar is a fictional character in J.R.R. Tolkien's Middle-earth legendarium. He is introduced in The Silmarillion as the supreme being of the universe, creator of all existence. In Tolkien's invented Elvish language Quenya, Eru means "The One", or "He that is Alone" and Ilúvatar signifies "Father of All". The names appear in Tolkien's work both in isolation and paired (Eru Ilúvatar).