The film has received almost universal praise from critics. As of 2024, the film had an approval rating of 92% at
review aggregator Rotten Tomatoes based on 60 reviews, with an average score of 7.60/10. The website's critical consensus reads: "An uproariously funny confluence of top-shelf talent,
The Heartbreak Kid finds bittersweet humor in attitudes toward love and marriage in early '70s America." On Metacritic, the film has a
weighted average score of 74 out of 100, based on 12 critics, indicating "generally favorable reviews".
Vincent Canby of
The New York Times declared it to be "a first-class American comedy, as startling in its way as was
The Graduate".
Roger Ebert of the
Chicago Sun-Times gave the film 3.5 stars out of 4 in a review that concludes: "It's a comedy, but there's more in it than that; it's a movie about the ways we pursue, possess, and consume each other as sad commodities".
Gene Siskel of the
Chicago Tribune awarded the same 3.5/4 grade and wrote that "the heavy-handed comedy undermines the serious aspect of the movie—we really can't believe that Lenny would marry her in the first place. The overall high quality of the acting, however, does sustain the film".
Variety called it a "bright, amusing saga" until the "audience is jolted by a sudden shut-off ending with no climax whatsoever".
Charles Champlin of the
Los Angeles Times wrote that Grodin and Berlin "bring off hugely difficult comedy assignment with great style. Amidst increasing farcical events, they both somehow manage to preserve a sense of credible, foolish but sympathetic individuals lurking beneath the follies".
The Washington Post thought that the film "has its faults, but it's also one of the most entertaining and original American film comedies of the last few years".
The Independent Film Journal called it an "unquestionably brilliant comedy".
Variety noted in its review that the sudden ending of the film might have been indicative of another ending that had been planned, and later noted that Fox handed out a synopsis at screenings including an ending where "as they sail for Europe on their honeymoon, Lenny makes some startling discoveries about Kelly - and
The Heartbreak Kid comes to its bitingly funny end". ==Accolades==