Wilhelm Wackernagel (23 April 1806, Berlin – 21 December 1869, Basel) was a German-Swiss philologist specializing in Germanic studies. He was the father of Indo-Europeanist Jacob Wackernagel.
He studied Classical and Germanic literature at the University of Berlin as a pupil of August Boeckh and Karl Lachmann. In 1833 he moved to Basel, where from 1835 to 1869, he was a professor of German language and literature at the university. While at Basel, he turned down offers for professorships in Berlin, Munich, Tübingen and Vienna.
He was considered the leading Germanist after the death of Jacob Grimm in 1863. A number of Wackernagel's significant works were published posthumously. The following are some of his principal writings: