Herbert Jackson (1 March 1851 – 3 February 1921) was an English crammer associated with the University of Oxford. The son of a Devon doctor, Jackson attended the University of Oxford from 1868 as one of its first unattached students (not associated with any university college). After graduation in 1874, he refused to take the university's Master of Arts degree and worked briefly as an usher. He returned to Oxford to work as a crammer, a tutor who coached students to pass exams and gained a reputation as the last hope of men on the verge of failing their degrees.
Jackson was eccentric in personality. His reputation for taking long walks in the nearby countryside gave him the nickname "The British Workman", shortened to "Britters" in the Oxford style. Jackson wore old clothes and trousers with a low crotch, which led to rumours among students that they concealed a coiled-up tail.