Viking Fish Farms Ltd. is a commercial fish farming company and research organisation, which carries out both in-house and publicly funded research in marine aquaculture whilst also producing commercial quantities (sold to farmers in the UK and elsewhere) of turbot, ballan wrasse, Dover sole, and sea urchin juveniles; native and Pacific oyster spat; and seaweeds.

The Ardtoe Marine Laboratory, originally established in 1965 as a publicly funded aquaculture research station, was acquired by Viking Fish Farms Ltd in 2005. The unit has gained an international reputation in the development of techniques for rearing species such as turbot, sole, cod, haddock, halibut lobsters and scallops. It houses some of the largest marine experimental facilities in the UK, with tank ranging from 3 litre aquaria to 160 m3 GCS units, and has extensive photoperiod and temperature controlled multi-replicate experimental tank systems.

The company is currently expanding its interests in the marine renewable energy sector, including the use of low energy wave generation systems for powering offshore aquaculture facilities, and the production of seaweeds for the generation of syngas.