Walter Horne was a professor of Creative Writing at Starfleet Academy for a large part of the 24th century.

Both Jean-Luc Picard in the 2320s and Wesley Crusher in the 2360s took his course during their Academy days. When Picard expressed his surprised that Horne was still teaching by 2368, Wesley confirmed it and added that he was a good teacher. (TNG: "The Game")

This character was only mentioned in dialogue.