Movie memorabilia consist of anything related to cinema that one considers valuable, whether sentimentally or financially. Items may include original autographs, original theatre posters used to advertise the movie, movie props, photo stills, original costumes, original film scripts and presskits, and more.

The concept of movie memorabilia began with such things as scrap-books, autographs, photographs, and industry magazines, but quickly expanded in the post-World War II era. Collectors began seeking out original advertising material, and the classic "onesheet" movie poster became a popular object to own for any given film. Other material, such as lobby cards, international posters, personality posters, and glass slides also became sought after. Today, the field of movie memorabilia collecting has grown into an internationally recognised community of increasingly serious collectors, and also commonly includes props, costumes, and production materials such as concept art, call sheets, and screenplays. Auctions of memorabilia from such franchises as Star Trek and the James Bond films often net millions of dollars in revenue from auction houses such as Christies and Sotheby's.