Leimuiden is a Dutch village in the South Holland municipality of Kaag en Braassem.

Leimuiden is located north of Alphen aan den Rijn.

The village was first mentioned in the first half of the 11th century as Letthemutha, and means "mouth of the Leiden river".

[6] The village was bombed on 2 August 1940 by the Royal Air Force, because the Germans had established a local headquarters in Leimuiden.

The village "on the hill" (Noordeinde-Dokter Stapenséastraat-Burgemeester Bakhuizenlaan-Dorpsstraat) is approximately 0.5 meters below NAP.