Zach Galifianakis
Some of you may be more familiar with him from his work on Between Two Ferns, while others may recognize him from the Hangover trilogy. In any way, Zach Galifianakis is remembered as a huge guy by a lot of people. After quitting drinking in 2014, he lost an amazing 50 pounds, which he credits to his newfound discipline.

Zach Galifianakis
Jonah Hill
Jonah Hill is absolutely deserving of all of the praise he has been receiving for his weight loss efforts. If you are familiar with him from the Superbad series, it is probable that you will not recognize him today.

Jonah Hill