Saint Mark's Tower (Maltese: Torri ta' San Mark), originally known as Torre del Cortin[1] and also known as Qalet Marku Tower (Maltese: Torri ta' Qalet Marku), is a small watchtower in Baħar iċ-Ċagħaq, limits of Naxxar, Malta.

Saint Mark's Tower was built in 1658 on Qrejten Point in Baħar iċ-Ċagħaq, on the north shore of Malta.

In 1741, a fougasse was built close to the tower, and it was believed to have been lost until it was rediscovered during road works in the area in 2014.

[4] Saint Mark's Tower is managed by Din l-Art Ħelwa, who restored it in 1997.

The tower is in good condition, but the area around it has been criticized for the amount of litter left there, mainly by people camping on the peninsula.