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The film's title was inspired by the English-language title of director Enzo G. Castellari's 1978 war film, The Inglorious Bastards. When asked for an explanation of the film's title's spelling during a news conference at the Cannes Film Festival, Tarantino said, "I'm never going to explain that".
When pushed on it, Tarantino would not explain the first u in Inglourious, but said, "The Basterds? That's just the way you say it: Basterds." Tarantino later stated in an interview that the misspelled title is "a Basquiat-esque touch."
He further commented on Late Show with David Letterman that Inglourious Basterds is a "Quentin Tarantino spelling".
Tarantino é famoso por levantar esse tipo de pergunta sem resposta para brincar com a mente dos espectadores.