The Law of Enclosures is a Canadian drama film, released in 1999. The film was written and directed by John Greyson, and based on the novel The Law of Enclosures by Dale Peck.

The novel traced the marital relationship of Henry and Beatrice, characters based on Peck's real-life parents, over the course of their lives from their courtship as young adults to their 40 th wedding anniversary. For the film adaptation, Greyson set the events in 1991 against the backdrop of the first Gulf War, with Henry and Beatrice's younger and older selves all coexisting in a single time frame.

Sarah Polley and Brendan Fletcher played Henry and Beatrice as a young couple, with Diane Ladd and Sean McCann playing the older characters. Greyson also set the film in Sarnia, Ontario. The film's cast also included Kristen Thomson, Rob Stefaniuk, Shirley Douglas and Jasmine Guy. The score was written by Don Pyle and Andrew Zealley.

Although written by an openly gay novelist and directed by an openly gay filmmaker, the film only lightly touches on specifically gay themes.