Robert Mascall Curteis (12 October 1851 – 21 January 1927) was an English cricketer. Curteis was a right-handed batsman. He was born at Hailsham, Sussex, and was educated at Westminster School. Curteis made his first-class debut for Sussex against Kent in 1873 at Ashford, Eastbourne. His next appearance for Sussex in first-class cricket came against Gloucestershire in 1873, with Curteis making seven further first-class appearances for the county, the last of which came against the Marylebone Cricket Club in 1878. In his nine first-class matches for Sussex, he scored a total of 101 runs at an average of 7.21, with a high score of 41. He also made two first-class appearances for the Marylebone Cricket Club, both against Hampshire in 1880 and 1881.