Teijo National Park (Finnish: Teijon kansallispuisto, Swedish: Tykö nationalpark) is a national park in Southwest Finland, Finland in the Perniö area of Salo municipality.

The park was established on January 1, 2015, and covers an area of 34 square kilometres (13 sq mi).

[1] In the National Park, there is one eutrophic fen, which is a type of mire that has almost disappeared in southern Finland.

The park is also home for several species of freshwater fish, nesting birds including goose, cranes, sandpipers and grouse; and mammals such as moose and deer.

The iron works contain many log houses from the 1800s which have been renovated to their original state.