Strömsborg is a small islet in central Stockholm, Sweden, located north of Stadsholmen, and west of Helgeandsholmen, between the bridges Centralbron, a motorway passing through central Stockholm, and Vasabron. Strömsborg is part of Gamla stan, the old town of Stockholm and is connected to the rest of the world by the bridge Strömsborgsbron leading over to Vasabron.