At the University of California, Berkeley, Tom studied physics and then literature, graduating with a B.A. in English. He also ran a film society and played on the varsity golf team.

Mr. Luddy at the 2017 Telluride Film Festival. The festival became a gathering of devotees to the religion of filmmaking, and Mr. Luddy was its most fervent believer and its main officiant.

“I Vitelloni,” Federico Fellini’s 1953 film about a group of young men on the brink of adulthood drifting about in a small Italian village, to George Lucas before he made “American Graffiti.”

It was a measure of Mr. Luddy’s influence, The Times noted in 1984, that he showed “The Italian,” a 1915 film that is considered a model for the immigrant-gangster epic, to Mr. Coppola before he made “The Godfather,”

As director of special projects for Francis Ford Coppola’s company American Zoetrope, he produced movies like Paul Schrader’s “Mishima: A Life in Four Chapters” (1985), a complicated film about Yukio Mishima, the eccentric Japanese author who killed himself publicly in 1970 — a passion project that Mr. Schrader has described as “the definition of an unfinanceable project.” Mr. Luddy was its tireless booster and supporter, funding it early on with his American Express card.