Charles Grimes (24 February 1772 – 19 February 1858) was an English surveyor who worked in colonial Australia. He served as Surveyor General of New South Wales and discovered the Yarra River in what is now the state of Victoria. During his career, he mapped the route of the Hobart Road, Tasmania's main north-south arterial route. Much of the modern Midland Highway still follows the route that he planned.