默伦（法语：Melun）是法国法兰西岛大区的一个镇，也是塞纳-马恩省的省会，人口约3.78万（2007年）。

默伦是首都巴黎的市郊，位于巴黎东南部，离巴黎市中心约41.4公里。

Melun (French pronunciation: ​[məlœ̃], local pronunciation: [mølɛ̃]) is a commune in the Seine-et-Marne department in the Île-de-France region in north-central France. It is a southeastern suburb of Paris 41.4 km (25.7 miles) from the centre of Paris. Melun is the prefecture of the Seine-et-Marne, and the seat of an arrondissement. Its inhabitants are called Melunais.