 The film eventually grossed $75,982,834 in the U.S. and $61,000,000 internationally, for a worldwide total of $136,982,834.This final gross made "Conspiracy Theory" the 19th highest-grossing film in the U.S. in 1997.

Review aggregation website Rotten Tomatoes gives the film a score of 56% based on reviews from 43 critics.Audiences polled by CinemaScore gave the film an average grade of "B+" on an A+ to F scale.