Academic vocabulary lists developed for English, Norwegian and Swedish have advanced our understanding of the lexical inventories in these languages. This PhD thesis presents four studies aimed at identifying and describing Danish academic vocabulary and includes the development of a Danish academic word list. To accomplish this aim, a corpus of 3 million words of written academic Danish, the AcaDan Corpus, was compiled together with two smaller corpora of written academic and general Danish. The findings of these four studies advance our understanding of academic vocabulary, in general, and of Danish academic vocabulary, in particular. Moreover, this research has pedagogical implications for the teaching of academic Danish to both L1 and L2students and learners as it offers a basis for the development of pedagogical tools and teaching material with an explicit focus on vocabulary.