The finals game of the men's soccer tournament on Fox was watched by over 16 million people.
The previous record was set in 1994 for a game between Italy and Brazil, which was watched by 14 million people.
The World Cup finals between France and Croatia was the lowest-viewed game in 14 years, making this year's audience increase for Fox even more significant.
The game was watched by almost 30 million people in France, setting a new record.
The game broke a record for the network in the US, with 9 million viewers tuning in.
Argentina defeated France in a shoot out. Argentina won the World Cup for the first time in 26 years. Even from the players, the choice to hold the tournament in Qatar was met with protests. Billions of dollars were spent to build stadiums to host the tournament in which thousands of migrants and laborers died in the process. In October, some French cities said they wouldn't show the games in public because of the human rights issues in the country.
On Tuesday, Messi's post of the World Cup trophy became the most-liked post on the social media platform.
Argentina beats France in penalty kicks to win the World Cup.
The boss of the world cup says everyone has their own problems.