Doug's 1st Movie is a 1999 American animated valentines comedy film based on the Disney-produced episodes of the Nickelodeon and ABC television series Doug. The film was directed by Maurice Joyce, and stars the regular television cast of Tom McHugh, Fred Newman, Chris Phillips, Constance Shulman, Frank Welker, Alice Playten, Guy Hadley, and Doris Belack. Produced by Walt Disney Television Animation and Jumbo Pictures with animation provided by Plus One Animation, it was released by Buena Vista Pictures Distribution under its Walt Disney Pictures label on March 26, 1999. The film serves as the series finale to the show. An accompanying Mickey Mouse Works short entitled Donald's Dynamite: Opera Box was released with the film.

The film received generally negative reviews, with criticisms directed at its story, screenplay, and characters; the voice acting however received some praise. Despite the title and its mild success at the box office, no further films based on Doug were made.