The surname Watson is of English origin, and its meaning is “son of Walter”. The name was originally used as a patronymic surname to indicate the son of someone named Walter. The Watson surname has been traced back to the 13th century, and has been borne by many notable individuals throughout history, including the founder of IBM, Thomas J. Watson. Today, the Watson surname remains relatively common in English-speaking countries, and is a reminder of the rich history and heritage of those who bear it.