The Happy Day is a musical comedy in two acts by Seymour Hicks, with music by Sidney Jones and Paul Rubens, and lyrics by Adrian Ross and Rubens. It was produced by George Edwardes's company (by the estate's executor, Robert Evett) and was directed by Evett. The story concerns a royal couple who dislike each other but ultimately fall in love. A masquerade scene provides opportunities for mistaken identity.