John Wemmick is a fictional character in Charles Dickens's novel Great Expectations. He is Mr Jaggers's clerk and the protagonist Pip's friend. Some scholars consider him to be the "most modern man in the book." Additionally, Wemmick is noted as one of Dickens's "most successful" split characters, insofar as Wemmick's character represents an exploration of the "relationship between public and private spheres in a divided existence."