Lennox Tower is a ruinous fifteenth-century tower house at Lymphoy, near the Water of Leith, between Balerno and Currie, 11 kilometres (6.8 mi) south-west of Edinburgh, Scotland.

[1] The tower was built by the Earls of Lennox, who belonged to the Stewart family.

Mary, Queen of Scots and Regent Morton visited the castle, while James VI used it as a base for hunting.

The only part remaining intact is the basement, the entrance of which is in the north-east corner, and the base of a turnpike stair.

It is thought that a barmkin once surrounded the site, while other buildings probably stood between the tower and the ditch.