"The Diary of Horace Wimp" is the fourth track on the Electric Light Orchestra album Discovery, written by Jeff Lynne.

Released in 1979 as a single, the song is Beatlesque in nature and became a Top Ten hit in the UK and Ireland.

The lyrics describe a week in the life of a repressed man named Horace who wants to express his affection towards a woman he meets, and overcomes his shy nature with the help of "a voice from above."

The music video references Citizen Kane in its ending, showing a closeup of Jeff Lynne saying "Horace Wimp," echoing Orson Welles' character in the film saying "Rosebud" as he dies.

Really wild use of the vocoder.The B-side was "Down Home Town", which first appeared on the band's fifth album Face the Music.