Friedrich Smend (26 August 1893 – 10 February 1980) was a German Protestant theologian and librarian at the Preußische Staatsbibliothek in Berlin, publishing a catalogue of the writings of Adolf von Harnack.
His father Julius Smend was professor, first in Strasbourg, and then from 1918 first dean of the Protestant theological faculty of the University of Münster.
He worked as librarian of the Preußische Staatsbibliothek in Berlin from 1923, where he published a catalogue of the writings of Adolf von Harnack.
During the Nazi regime, he was a member of the Bruderrat [de] of the Bekennende Kirche and took part in the Kirchenkampf.
After World War II, Smend was appointed prefessor of hymnology, liturgics and church music at the Kirchliche Hochschule Berlin, where he remained until retirement in 1958.