Moonsund Regatta () is a sailing competition that takes place on Väinameri (Moonsund) in Estonia.
First Regatta took place in 1958.
In 2017, there was 60. Regatta, and this Regatta was the biggest of Moonsund Regattas: 850 sailors with 144 yachts, and sailors from five countries (Estonia, Latvia, Lithuania, Finland and Russia).