Meaning A girl's name of Latin origin, it means "Diminutive of Louisa: Latin feminine form of Louis: Famous warrior Famous Bearer: Louisa M Alcott, who wrote 'Little Women'(1868)." Origin of Lou Latin +-100%Zoom level changed to 1 Popular Middle Names Eric, Hayden Pronunciation 🔊 Listen Lou Similar Names Lulu Louisa Demi-Lou Millie Milly Lucy Louise Liana Camilla Gusta Gussie Year by Year Popularity of Lou