Which is the least successful Indiana Jones movie?

The least successful Indiana Jones movie is Indiana Jones and the Kingdom of the Crystal Skull. It received mixed reviews from critics, with some praising its action sequences and Harrison Ford's performance, while others criticized its plot, pacing, and visual effects. The film grossed over $790 million worldwide, making it the second-highest-grossing film in the Indiana Jones franchise, but it was still considered a disappointment compared to the other films in the series.