"All That Really Matters" is a song by American DJ and producer Illenium and American singer-songwriter Teddy Swims. It was released on July 29, 2022, as the second single from Illenium's fifth studio album Illenium.
Upon release, Illenium said "With all that's going on in the world, it's great to just take a step back and find what really matters. Teddy's voice and performance take it to the next level." Swims said "This song is just a great reminder of what truly matters. With the world the way it is currently, it's easy to get caught up in all the distractions. The only thing that really matters is love. I've always been a fan of Illenium, so it’s an honor to do a song with him."