List of fish of the North Sea consists of 201 species, both indigenous, and also introduced, listed in systematic index. It includes 40 species of Chondrichthyes, three species of Agnatha, the others being bony fishes.
The following tags are used to indicate the conservation status of species by IUCN's criteria:
All the listed species are classified by their origin as native, introduced, invasive, and species found accidentally (difficult to characterize as native or invasive).