Mommy is a 2014 Canadian drama film written, directed and edited by Xavier Dolan and starring Anne Dorval, Antoine Olivier Pilon, and Suzanne Clément.

The story concerns a mother with a sometimes-violent teenage son, struggling to control his behaviour in a desperate attempt to avoid seeing him being institutionalized.

The story focuses on mother–son relationships, a reoccurring theme in Dolan's work, and also marks his fourth collaboration with Dorval and his third with Clément.

In a fictional outcome for the 2015 Canadian federal election, a political party comes to power and establishes a law called S-14.

When Steve gives her a cart full of groceries and a necklace reading "Mommy", Die suspects that he has stolen the items.

Kyla, who is dealing with a stuttering problem and recently moved into the area with her husband and daughter, begins to tutor Steve.

All is looking up, until Die is served papers by the parents of the injured boy, indicating she and Steve are being sued for the injuries caused by his fire.

Immediately after the straps of his jacket are removed by two officials, Steve runs full speed towards a large, bright window.

[6] With Dolan acknowledging mother-son relationships have always been an underlying theme in his work, the specific idea for Mommy came about after directing Antoine Olivier Pilon in the music video for "College Boy" by Indochine, finding him to be a great actor.

[10] In casting actresses Anne Dorval and Suzanne Clément, whom Dolan had worked with before, he assigned them roles that he felt were the opposite of what each had previously played.

[16] The film became available on the U.K. Netflix in 2016, with Dolan publicly criticizing the company for altering the unconventional aspect ratio and demanding, "Take it as it is, or remove it.

[3] On Rotten Tomatoes, the film received an approval rating of 89%, with an average score of 7.9/10 based on 130 reviews; the site's consensus states: "As challenging as it is rewarding, Mommy finds writer-director Xavier Dolan taking another impressive step forward".

[20] On Metacritic, the film holds an average score of 74, based on 34 critics, indicating "generally favorable reviews" in accordance with the website's standards.

[21] In Canada, David Berry of the National Post gave the film four stars, writing, "As a movie, Mommy is a very similar thing to its namesake jewellery, a flashy, scary, gorgeous little piece of home, a shiny bauble that still manages to hang very close to the heart".

[22] Brendan Kelly of the Montreal Gazette gave it five out of five stars, calling it "the absurdly prolific young auteur's best film yet" and "an ode to the strength of tough working-class single mothers everywhere", and praising Anne Dorval as "extraordinary".

[25] Liam Lacey at The Globe and Mail gave the film three stars, calling the introductory information about S-14 "clumsy", but added "What makes the flaws forgivable is Dolan's love of his characters".

[26] On 21 May 2014, Mommy received a four-star rating from The Guardian reviewer Peter Bradshaw, who described the film as "a splashy, transgressive treat, from trailer-trash chat to unexpected sex and surprising emotional depth".

[31] The Wall Street Journal's Joe Morgenstern, while finding the acting "powerful", found fault in the aspect ratio.

[32] Richard Brody of The New Yorker panned the film, saying the depiction of Steve "has no basis in psychology; rather, it appears as Dolan's own pseudo-transgressive artistic tantrum".