Butterfly Inc is a fictitious construction supply company from the YouTube comedy/animated sitcom series The Lenny Leggo Show. Recurring character Quincy Leggo works for the company as their spokesperson.

The company is a parody of the real life construction supply company Catterpillar Inc. In the show, the company has ganged significant controversy as the short presentation for the company is "BUTT", the same way "CAT" is short for Catterpillar Inc.