莱顿（荷兰语：Leiden， 发音），土着荷兰语读作Leyden）是荷兰南荷兰省的一个城市和基层政权（municipality），拥有118,000名居民。它与乌赫斯特海斯特（Oegstgeest），莱德多普（Leiderdorp），福尔斯霍滕（Voorschoten），法尔肯堡（Valkenburg），莱茵斯堡（Rijnsburg），卡特韦克（Katwijk）形成了一个城区，拥有254,000名居民。更大的莱顿城市群拥有332,000名居民，是荷兰第六大城市群。它位于老莱茵河（Oude Rijn）上，其南端距离中央政府所在地海牙20公里，其北端距离哈勒姆40公里很近。卡赫湖(Kagerplassen)休闲区正好在莱顿东北部。

Leiden (Dutch pronunciation:[ˈlɛi̯.də(n)]; in English and archaic Dutch also Leyden) is a city and municipality in the Dutch province of South Holland. The municipality of Leiden has a population of 122,565, but the city forms one densely connected agglomeration with its suburbs Oegstgeest, Leiderdorp, Voorschoten and Zoeterwoude with around 190,000 inhabitants. Leiden is located on the Old Rhine, at a distance of some 20 kilometres (12 miles) from The Hague to its south and some 40 kilometres (25 miles) from Amsterdam to its north. The recreational area of the Kaag Lakes (Kagerplassen) lies just to the northeast of Leiden.