Eöl, called the Dark Elf, is a fictional character in J. R. R. Tolkien's Middle-earth legendarium. He is introduced in The Silmarillion as an Elf of Beleriand and is a character existing in some form from the earliest to the latest writings.
EOL or Eol may refer to:
- Encyclopedia of Life, a freely-accessible, online collaborative bio-encyclopedia
- End-of-life (product), a term used with respect to terminating the sale or support of goods and services
- End-of-line, a special character or sequence of characters signifying the end of a line of text in computing
- Eöl, a character in the fiction of J.R.R. Tolkien