Pskov, known at various times as the Principality of Pskov or the Pskov Republic, is a medieval state on the south shore of Lake Pskov.

The capital city, also named Pskov, is located at the southern end of the Peipus–Pskov Lake system at the southeast corner of Ugandi, about 150 miles (240 km) southwest of Nevanlinna, and 100 miles (160 km) west-southwest of Great Novgorod.

It is originally known as Pleskov, and is now roughly equivalent geographically to the Pskov Oblast of Russia.

I is a principality 862–1230s and then joined to Novgorod Republic.

From 1348 Pleskov becomes again independent from Novgorod and establishs an aristocratic oligarchy.