Rubén Doblas Gundersen
- Birthday: 1990-02-13
- Place of birth: Málaga, Spain
- Also know as: Rubius
Rubén Doblas Gundersen, better known by his pseudonym El Rubius or ElRubiusOMG, is a Spanish-Norwegian YouTube personality whose channel primarily consists of gameplays and vlogs. His channel currently has over 9.1 billion views and 40 million subscribers. It is also the 50th most subscribed YouTube channel in the world.
