"I Had Too Much to Dream (Last Night)" is a song written by Annette Tucker and Nancie Mantz which was recorded in late 1966 by the American garage rock band the Electric Prunes.

The song's title is a pun on the phrase "too much [alcohol] to drink": its lyrics describe how the singer has woken from dreaming about an ex-lover.

They were introduced to record producer Dave Hassinger, and after a series of rehearsals at Leon Russell's house released the single "Ain't It Hard".

Convinced that the band could not write their own songs, Hassinger sought material from the songwriting team of Annette Tucker and Nancie Mantz, including "I Had Too Much to Dream (Last Night)".

The backwards guitar which opens the song originated from rehearsals at Russell's house, where Williams used a 1958 Gibson Les Paul with a Bigsby vibrato unit.