Widen is a municipality in Switzerland.
Widen or Widén may also refer to:
Widen, West Virginia, community in United States Widen (company), American software company WiDEN, Wideband Integrated Digital Enhanced Network, software
People with the surname Bernard A. Widen (1920–2017), American dentist and artist Gregory Widen (active 1986-), American screenwriter and director Peter Widén (born 1967), Swedish pole-vaulter Pontus Widén (1920–1983), Swedish bandy player Raphael Widen (died 1833), American pioneer and politician Sara Widén (1981–2014), Swedish opera singer