Viimsi is a small borough in Harju County, northern Estonia. It's located about 9 km (6 mi) northeast of the centre of Tallinn, just north of Tallinn's subdistrict Merivalja. Viimsi is the administrative centre of Viimsi Parish. As of 2011 Census, the settlement's population was 2,341.

Viimsi Manor, which was established by St. Brigitta Nunnery (located in Pirita), was first mentioned in 1471 as Wiems. After the Great Northern War the manor had multiple owners, among those the Stenbock, Buxhoeveden, Maydell and Schottländer families. After the dispossession in 1919 the manor was given to the Commander-in-chief of the Estonian Army General Johan Laidoner who owned it until 1940. During World War II it was used by the Red Army. Since 2001 the building houses the National War Museum of Estonia (also the Museum of General Laidoner).