The Dallas Cowboys have been valued at $15.5 billion, making them the most valuable franchise in the NFL. This valuation is based on Sportico's annual list, which was released recently.

The team's value has increased by 21% from the previous year. Further information on the valuation can be found through Sportico's annual valuation list.

Details on how the valuation was determined are available from the source, providing more insight into the team's financial standing and ranking among other NFL franchises.