HSwMS Fylgia was an armored cruiser of the Swedish Navy.

Fylgia's keel was laid by Bergsunds Mekaniska Verkstad in October 1902.

Upon her commissioning, she was the smallest true armored cruiser in the world.

On 12 December 1927, Fylgia collided with the Brazilian cargo ship SS Itapura at Salvador, Bahia, Brazil.

This article about a specific military ship or boat of Sweden is a stub.