贝尔特里（法语：Bertrix）是位于比利时卢森堡省的一座城市，人口8,195人（2006年）。

Bertrix (Walloon: Bietris) is a Walloon municipality of Belgium located in the province of Luxembourg. On 1 January 2007 the municipality, which covers 137.7 km², had 8,164 inhabitants, giving a population density of 59.3 inhabitants per km².

Bertrix is home to the NATO reserve Jehonville Air Base.