From Danish Esben, from Old Norse Ásbjǫrn. First recorded in Norway in early 19th century.
- A male given name.
- Kristoffer Kruken - Ola Stemshaug: Norsk personnamnleksikon, Det Norske Samlaget, Oslo 1995, ↑ISBN
-  Statistisk sentralbyrå, Namnestatistikk: 14 143 males with the given name Espen living in Norway on January 1st 2011, with the frequency peak in the 1980s. Accessed on April 29th, 2011.