"Lightning Bug" is a song written and recorded by Canadian country artist Dean Brody. The song was released to radio in April 2021, as the fourth single from Brody's seventh studio album Boys.
Brody wrote "Lightning Bug" by himself, and it was inspired by one of his first songwriting trips to Nashville, Tennessee. He remarked that he wanted to write a song "that captured the magic of being caught up in a warm summer night. It’s meant to tell the story of being in love with that special someone, with an almost dreamlike soundscape".