Lost Cause is the twelfth mixtape by Canadian rapper and singer Tory Lanez, released independently for digital download on October 1, 2014.

[1] The mixtape features no guest appearances, while production was handled by Lanez himself alongside Burd & Keyz, Christian Louie, Daniel Worthy, Grave Goods, Matti Free, Noah Beresin, Play Picasso, RL Grime, Ryan Hemsworth, and Syk Sense.

For its tenth anniversary, on October 4, 2024, the mixtape was released through Lanez's independent record label, One Umbrella on streaming media, featuring remastered instrumentals while some tracks became longer than their original versions.

On August 14, 2014, he released the first single to the mixtape, "The Mission", to celebrate the announcement of his tour that was taking place in Houston, Los Angeles, New York, Toronto, Burlington, Dallas, and Atlanta.

[2] Each week following the announcement of his tour, Lanez began to release the final three singles from the mixtape, "Henny in Hand",[5] "Mama Told Me",[6] and "I-95".

Ten years ago, I was broke as fuck sleeping in my girlfriend’s car and on my manager’s couch trying to create a sound that was unique to myself.