斯堪的那维亚语支或北日耳曼语支，是印欧语系－日耳曼语族的一个分支，包括通行于斯堪的纳维亚地区、芬兰的一部分地区，以及法罗群岛和冰岛的语言。

北日耳曼语支还可以细分为两个分支，分别是“西北日耳曼支”和“东北日耳曼支”。其中“东北日耳曼支”受低地德语的影响非常显着，包括丹麦语、瑞典语以及这两种语言的各种方言和变种。“西北日耳曼支”包括法罗语、冰岛语和挪威语。除了地域上的划分外，还有另外一种按照语言之间的相互关联程度来划分的方式，即将挪威语、丹麦语和瑞典语称作“内陆斯堪的纳维亚语”，而将法罗语和冰岛语称作“海洋斯堪的纳维亚语”。由于在历史上丹麦曾长期统治挪威，因此将挪威最早出现的所谓“书面挪威语”（Bokmål）和今日的官方挪威语，都被视为“内陆斯堪的纳维亚语”。

The North Germanic languages make up one of the three branches of the Germanic languages, a sub-family of the Indo-European languages, along with the West Germanic languages and the extinct East Germanic languages. The language group is sometimes referred to as the Nordic languages, a direct translation of the most common term used among Danish, Swedish and Norwegian scholars and laypeople. In Scandinavia, the term "Scandinavian languages" refers specifically to the mutually intelligible languages of the three Scandinavian countries and is thus used in a more narrow sense as a subset of the Nordic languages, leaving aside the insular subset of Faroese and Icelandic (and the unrelated Finnish and Sami languages). The term Scandinavian arose in the 18th century as a result of the early linguistic and cultural Scandinavist movement, referring to the people, cultures, and languages of the three Scandinavian countries and stressing their common heritage.