Witham is a town and civil parish located in the Braintree district of Essex, England. It is situated along the Roman road that connects the cities of Chelmsford and Colchester.
The geography of the area is defined by the River Brain, which flows through the town before joining the River Blackwater on its outskirts. According to the 2021 census, the parish had a population of 27,797, while the population of the built-up area was recorded at 27,395.