(Swedish: [t??'ne?r]; 13 January 1843, Källstorp, Malmöhus County – 21 November 1928, Lund) was a Swedish linguist.
He was professor of eastern languages at Lund University 1879-1908, lead editor of Svenska Akademiens ordbok 1913-1919, member of the Bible Commission (writing a new translation) 1884-1917, and member of the Swedish Academy from 1882 onward.
Tegnér was the grandson of the well-known poet Esaias Tegnér, also his namesake, and was brother-in-law to the poet and composer Alice Tegnér.