温带落叶林（英文：Temperate deciduous forest）或称温带阔叶林（英文：Temperate broad-leaf forests），以经年性落叶乔木、木本植物为主，分布于夏季温暖潮湿，冬季较不严寒的地区，或是微气候较明显的山地区域。

由于分布地的气候与土壤性质，温带落叶林的林相多样性较高，具有代表性的树种为：橡树（学名：Quercus）、枫树（学名：Acer）、山毛榉（学名：Fagus）、榆树（学名：Ulmus）等。

大部分温带落叶林分布地位于北半球，如北美东部、亚洲东部及欧洲地区，在南美洲南部、澳洲也有少量分布。

Temperate deciduous forests or temperate broad-leaf forests are dominated by trees that lose their leaves each year. They are found in areas with warm, moist summers and mild winters. The three major areas of this forest type occur in the Northern Hemisphere: eastern North America, East Asia, and Europe. Smaller areas occur in Australasia and southern South America. Examples of typical trees in the Northern Hemisphere's deciduous forests include oak, maple, beech, and elm. The diversity of tree species is higher in regions where the winter is milder, and also in mountainous regions that provide an array of soil types and microclimates. One of the world's great protected examples of this forest type is found in Great Smoky Mountains National Park.