Louder Than Life is a rock/heavy metal festival that takes place in Louisville, Kentucky, United States. The event is known to also feature whiskey, craft beer, gourmet food and multiple exhibits. It has made a large economic impact on the city of Louisville.

The first Louder Than Life was a two-day festival hosted at Champions Park in 2014.

The 2015 festival also featured live matches between wrestlers from WWE NXT.

In 2018 the festival was canceled due to continuing rain and deteriorating conditions at Champions Park.

The festival was expanded to three days in 2019 and moved to Highland Festival Grounds at the Kentucky Exposition Center to prevent flooding.

The 2020 festival was cancelled due to the COVID-19 pandemic.

In 2021 the festival was expanded to four days.

2024 celebrated the 10-year anniversary of the festival with a record 140+ bands, including the reuniting of Slayer after a five-year retirement. However, due to weather conditions caused by Hurricane Helene, Louder Than Life canceled their Friday shows, which included Slayer in the line-up. On October 3, Louder Than Life announced that ticket holders for Friday and 4-days will be offered an exclusive invite to see Slayer at the Aftershock Festival on October 10. On October 30, Danny Wimmer Presents announced that Slayer would return for 2025. Friday and 4 day ticket holders for 2024 would also have the option to receive a partial refund or a credit towards 2025 festival passes.