List of 1951 box office number-one films in the United States

This is a list of films which placed number one at the weekly box office in the United States during 1951 per Variety's weekly National Boxoffice Survey. The results are based on a sample of 20–25 key cities and therefore, any box office amounts quoted may not be the total that the film grossed nationally in the week.

Highest-grossing films
The highest-grossing films during the calendar year based on theatrical rentals were as follows: