"Best Friend" is a song by American rapper Yelawolf featuring fellow American rapper Eminem. It was released on April 14, 2015 as the fifth single from the former's second studio album Love Story (2015) via Shady and Interscope Records. It was later included on Eminem's second greatest hits album Curtain Call 2 (2022), with Shady, Interscope, and Aftermath Entertainment.
On April 24, 2015, Yelawolf uploaded the music video for "Best Friend" on his YouTube and Vevo account.