"Rain Is a Good Thing" is a song co-written and recorded by American country music artist Luke Bryan. It was released in January 2010 as the second single from his 2009 album Doin' My Thing. The song became Bryan's first number one hit on the US Billboard Hot Country Songs chart for the weeks of July 24 and 31, 2010. Bryan wrote this song with Dallas Davidson.

Bryan told The Boot that he and co-writer Dallas Davidson "used to have the saying, 'Rain makes corn, and corn makes whiskey,' and it was just something we always said. If we were a little bummed out about the rain […] we'd be like, 'Well, rain makes corn, and corn makes whiskey,' and that would kind of make us feel a little better about it […] We didn't start with 'Rain Is a Good Thing' as a title and wrote to it. We just started with 'rain makes corn, and corn makes whiskey' and we kind of arrived at 'Rain Is a Good Thing."