Mute Swan, Cygnus olor, is a species of swan found in wetland, river and lake and marine inlet and transitional water ecosystems.

Cygnus olor has a breeding population size of 67700-92900 pairs and a breeding range size of 1720000 square kilometres in the EU27. The breeding population trend in the EU27 is Increasing in the short term and Increasing in the long term. Cygnus olor has a winter population size of 171000-217000 individuals in the EU27. The winter population trend in the EU27 is Increasing in the short term and Increasing in the long term.

The EU population status of Cygnus olor was assessed as Secure, because the species does not meet any of the IUCN Red List criteria for threatened or Near Threatened, or the criteria for Depleted or Declining (the EU27 population or range has not declined by 20% or more since 1980).