Thomas Seltzer (22 February 1875, Russia − 11 September 1943, New York City) was a Russian-American translator, editor and book publisher.
In addition to speaking his native Russian, Seltzer was conversant in Polish, Italian, German, Yiddish, and French and it was his language skills that led him to a career as a translator.
As an editor, Seltzer gained experience at Funk & Wagnalls and beginning in 1917 the New York publishing firm Boni & Liveright.
It was during his tenure with Funk & Wagnalls that Seltzer met his wife Adele Szold and the couple were married 21 October 1906.
As a result of publishing controversial writers, Seltzer was attacked by the New York Society for the Suppression of Vice in 1922 and all copies of D. H.Lawrence's Women in Love, Arthur Schnitzler's Casanova's Homecoming, and the anonymously written A Young Girl's Diary were confiscated.