The surname "Braithwaite" is of English origin, primarily found in the northern regions of England. It is derived from a place name, meaning "broad clearing" or "broad road" in Old Norse. The name has historical significance and can be traced back to the medieval period, often associated with families from the Lake District. Braithwaite is also a common surname in various cultures, with notable individuals bearing the name, including John Braithwaite, an Australian sociologist, and William Braithwaite, a British poet. The name has variations and can be found in different spellings, reflecting its diverse heritage.