The TestDaF, formally Test Deutsch als Fremdsprache („Test of German as a foreign language“), is a standardised German language test aimed at people who would like to study at or academics and scientists who would like to work in German universities. The test is run by the TestDaF-Institut.

The test can be taken in 91 different countries around the world. The test covers listening comprehension, reading comprehension, writing and speaking, and is recognised by German universitiesas proof of prospective students’ ability.

There are three levels (TDN 3–5) which correspond to the Common European Framework of Reference for Languages levels B2–C1