Alka Forsikring, formally Insurance Joint Stock Alka, is a Danish insurance company that was established in 1944.^[1] Alka provides accident and life insurance. It is owned by trade unions and associated organisations.

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Alka was created by the merger of Workers' Life Insurance, founded in 1903 and Danish Cooperative Assurance, founded in 1929, both working with the Danish labor movement.^[2] Over its history, Alka has grown by a series of acquisitions: Alka bought Nordlyset Insurance from English Provincial in 1992; and in 1998, it took over the Danish subsidiary of the Swedish insurer, Salus Ansvar. In 2001, Alka bought by the German insurance group Allianz's Danish subsidiary.

Some 55% of Alka's shares are owned by trade unions, 35% by cooperative enterprises, including Arbejdernes Landsbank, and 10% by sister companies.

Alka is headquartered in Taastrup, Copenhagen. Their managing director is Jens Baerentsen.

Alka has been the title sponsor of Danish Superliga since 2015.

The company is a member of the co-operative movement.