Horst Seeger (6 November 1926 – 2 January 1999), pseudonyme Horst Schell, was a German musicologist, music critic, dramaturg, librettist and opera director.
Born in Erkner in the Province of Brandenburg, Seeger studied musicology at the Humboldt University of Berlin with Walter Vetter, Ernst Hermann Meyer and Hans-Heinz Dräger and worked as a music journalist and critic from 1954.
From 1959 to 1960 he was editor-in-chief of the journal Musik und Gesellschaft.
Seeger brought directors like Harry Kupfer and Ruth Berghaus and conductors like Herbert Blomstedt to Dresden.
He rendered great services to the reconstruction of the Semperoper.