Väddö

{{short description|Swedish island}}

{{additional citations|date=September 2023}}

File:Väddö kanal.jpg

Väddö is an island in the Baltic Sea in Roslagen district, Sweden.{{Cite book |last=United States Hydrographic Office |url=https://books.google.com/books?id=mWoDAAAAYAAJ&q=V%C3%A4dd%C3%B6&pg=PA218 |title=Baltic Pilot: The Gulf of Finland, the Aland Islands, the Aland Sea, and the Gulf of Bothnia |date=1920 |publisher=Hydrographic office under the authority of the secretary of the navy |pages=217–219 |language=en}} It is situated in Norrtälje Municipality. Together with the adjoined Björkö it is considered the seventh largest island of Sweden.

Väddö is separated from the mainland by the artificial Väddö Canal, first dug in the 16th century.