Charles Augustus Goodchap (2 April 1837 – 20 October 1896) was a New South Wales politician.
Goodchap was born in Kent, England, and educated at Huntingdon Grammar School. He went to New South Wales in 1853, and obtained a clerkship in the Colonial Secretary's office, from which he was transferred to the Lands and Works Department in 1856, and in 1859 to the Department of Public Works. He became Chief Clerk for Railways in 1870, Secretary for Railways in 1875, and Commissioner for Railways in 1878.
Goodchap retired from the Civil Service of New South Wales in 1888, and was returned to the New South Wales Legislative Assembly for Redfern at the general election in 1889 in the Protectionist interest. At the election in June–July 1891 he was defeated, and was nominated to the New South Wales Legislative Council by the Dibbs Government in May 1892.
Goodchap died unmarried in Potts Point, Sydney on 20 October 1896.