The original Back to the Future (1985) was written by Bob Gale and Robert Zemeckis.

Quick Scoop: Who Wrote Back to the Future?

  • Bob Gale is the co-creator, co-writer, and producer of the Back to the Future trilogy, widely credited as the key story architect of the franchise.
  • Robert Zemeckis co-wrote the screenplay with Gale and also directed the film, later returning to write and direct Parts II and III.
  • The script earned them major recognition, including Oscar and Golden Globe nominations for Best Original Screenplay after the movie became 1985’s top-grossing film.

A Bit of Story Behind the Script

  • Gale and Zemeckis developed the story together after Gale wondered what it would be like to go to high school with his own father, which became a core idea in Marty’s trip to 1955.
  • Their long-standing creative partnership (starting at USC film school) shaped the film’s mix of tight plotting, character-driven comedy, and emotional payoffs that screenwriting courses still use as a model today.

Why It’s Still a Trending Topic

  • Decades later, Back to the Future is still praised as a “near-perfect” screenplay, often cited in modern screenwriting breakdowns, YouTube essays, and film school analyses.
  • The writers’ choice to keep the time travel rules clear and character-focused is a frequent point of discussion in current forums and breakdowns of “how to write time travel that makes sense.”

TL;DR: Back to the Future was co-written by Bob Gale and Robert Zemeckis, with Gale as co-creator/producer and Zemeckis also directing the film.

Information gathered from public forums or data available on the internet and portrayed here.