Siegfried Lienhard (29 August 1924, in Sankt Veit an der Glan – 6 March 2011) was a professor of Indology at Stockholm University and a scholar of Sanskrit and the Newar language.He published on the history of poetry in South Asia, as well as a catalogue of the Newar manuscripts held in the State Library of Berlin, a collection of Newar folk songs, and textual studies of classical Newar texts.
In 1995 his students and colleagues published a Festschrift in his honour.
In 2007 Oskar von Hinueber edited the collected minor writings of Siegfried Lienhard.