Albert Vanloo (French: [albɛʁ vɑ̃lo]; Brussels, 10 September 1846 – 1920, Paris) was a Belgian librettist and playwright.
Vanloo lived in Paris as a child and was attracted to the theatre. As a young student he began writing plays and opéra comique libretti, notably with Eugène Leterrier who remained his main collaborator until the latter's death in 1884. He also worked with the writers William Busnach, Henri Chivot and Georges Duval.