...yeah, it's bad. Not abysmally so, but still.
—Anthony Benigno filmcritic.com
...the picture's general stupidity, careless direction and reliance on a single-joke premise that was never really funny to begin with are only the most obvious of its problems.
—Andrew Barker Variety
There are a few funny moments in Jack and Jill, most of them celebrity cameos that also serve to affirm what a cool, connected celebrity Mr. Sandler is. The most sustained of these is the appearance of Al Pacino as himself, falling for Jill and giving the film a jolt of genuine zaniness. I'm sorry to say that this may be Mr. Pacino's most convincing performance in years.
—A. O. Scott New York Times
...Sandler's lipsticked tomfoolery - and inability to share the screen with genuinely funny women - feels particularly regressive and stale.
—Robert Abele Los Angeles Times
...witless and sloppily constructed, getting by on fart gags, homeless jokes, Latino stereotypes and that old favorite, explosive chimichanga diarrhea...
—David Rooney Hollywood Reporter
... a dull drag-show routine headed nowhere...
—Nick Schager Village Voice
...a comedy that has one good joke, four strange cameos and a spirit so juvenile kids may wonder what Sandler's deal is.
—Scott Bowles USA Today
If the result is a movie that seems like a much slicker, more condensed, and speedier version of the Sandler comedies that have guaranteed his grandkids' retirement, count it as a blessing that it's over quickly. Not without pain, but quickly.
—Jaime N. Christley Slant Magazine
...a total bust, a stupefyingly unfunny and shamelessly lazy farce packed with cringe-worthy jokes and overt product placement.
—Peter Travers Rolling Stone