Jakob Ulrich (23 September 1856, in Waltalingen – 5 September 1906, in Zürich) was a Swiss Romance philologist. He studied Indo-European linguistics and Romance philology in Zürich and Paris, where his teachers included Gaston Paris and Paul Meyer. In 1879 he received his doctorate at Zürich under the direction of Heinrich Schweizer-Sidler with the thesis Die formelle Entwicklung des Participium Praeteriti in den romanischen Sprachen. In 1880 he obtained his habilitation for Romance philology at the University of Zürich, where in 1901 he attained a full professorship. After his death, he was succeeded at the university by Louis Gauchat.