The name Louie is a boy's name meaning "renowned warrier". Louie is ranked #964 on our popularity charts and is often added to lists like Nicknames for Boys and discussed in our forums with posts like "List 5 middles".
From the experts:
Celebrated in song—the rock 'n' roll classic "Louie, Louie"—this is a gregarious, friendly spelling of Louis not often used as a full first name. It reentered the US Top 1000 in 2015. It's a highly popular choice in England and Wales.
It's the given name of actor and comedian Louie Anderson.