Winseler (Luxembourgish: Wanseler) is a commune and village in north-western Luxembourg.
It is part of the canton of Wiltz, which is part of the district of Diekirch.
As of 2005, the village of Winseler, which lies in the east of the commune, has a population of 120. The municipality (commune) of Winseler has a population of 1116 and is composed by several villages, namely Doncols, Noertrange, Berlé, Grummelscheid, Pommerlach, Schleif, and Sonlez. The Mayor for his second term is Romain Schroeder and his municipal Council is completed by Charel Pauly, Aly Stelmes, Christophe Hansen (politician), Paul Kayser, Marco Schmitz and Roland Esch.
Other towns within the commune include Berlé, Doncols, Noertrange, Pommerloch, Grummelscheid, Schleif and Sonlez.
Like Lasauvage in the south of Luxembourg, Doncols and Sonlez, were formerly known as French-speaking (or, strictly, in their cases, Walloon-speaking) villages.