The Voosi Strait () is a strait in Estonia located between the island of Vormsi and the Noarootsi Peninsula on the mainland; this strait is part of Väinameri.
Several islets are located in the strait: Nätegrunne, Seasaar, Ulassaar, and Väike-Tjuka.
It is believed that the name Voosi is derived from a former inn called the Voosi Inn ().
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