Reviews provided by RottenTomatoes
New York Times:
Mr. Wyler and his associates have fashioned a natural, tender, and amusing yarn about the heiress to the throne of a mythical kingdom who is sick unto death of an unending schedule of speeches, greetings, and interviews attendant on her goodwill tour...
The film itself is a classic of romantic wish fulfillment, exactly the sort of beautiful lie that Hollywood specialized in.
Wyler lays out all the elements with care and precision, but the romantic comedy never comes together -- it's charm by computer.
For lovers of romantic comedies through the ages, Roman Holiday remains a favorite.
The newcomer named Audrey Hepburn gives the popular old romantic nonsense a reality it has seldom had before.
[Wyler] times the chuckles with a never-flagging pace, puts heart into the laughs, endows the footage with some boff bits of business and points up some tender, poignant scenes in using the smart script and the cast to the utmost advantage.