Sandilands (once known as Sutton le Marsh) is a neighbourhood of Sutton-on-Sea, in the East Lindsey district of Lincolnshire, England.

It forms part of the civil parish of Mablethorpe and Sutton.

The former golf course at Sandilands [1] is now owned by the National Trust.

[2] A family tennis tournament has been held in the first week of August every year since 1928, excepting 1939–1957.

The tournament has taken place at the Grange and Links hotel and also on a number of private courts in the village in 2022.