An Assassin's Diary (ISBN 0-06-120470-6) is a book written by Arthur Bremer and Harding Lemay and released in 1973.

It was based on part of the diary of Bremer, the would-be assassin of Alabama governor George Wallace.

In the book, Bremer says he was not particularly opposed to Wallace's political agenda, which many had branded as white supremacist; his primary motive was to become famous as he had also stalked President Richard Nixon.

Paul Schrader was partly inspired by Bremer's diary when he wrote the screenplay for the 1976 film Taxi Driver, which was directed by Martin Scorsese.

[2] Vidal further speculates that CIA agent E. Howard Hunt may have authored parts of Bremer's supposed diary, arguing there are similarities between Bremer's writing style and the prose found in Hunt's adventure and espionage novels, and noting Bremer's supposed diary alternates between passages of clear writing and passages of extreme misspelling and poor grammar.