Fezziwig is a fictional character in Charles Dickens's novella "A Christmas Carol." He is the employer of Ebenezer Scrooge, the protagonist of the story, and he is described as a cheerful and generous man who throws a Christmas party every year. Fezziwig is known for his kindness and hospitality, and he is the one who teaches Scrooge the importance of generosity and kindness during the Christmas season.