Samuel Roberts FRS (15 December 1827, in Horncastle, Lincolnshire – 18 September 1913, in London) was a British mathematician.
Roberts studied at Queen Elizabeth's Grammar School, Horncastle.
Roberts published papers in several fields of mathematics, including geometry, interpolation theory, and Diophantine equations.
Roberts and Pafnuty Chebyschev are jointly credited with the Roberts-Chebyshev theorem related to four-bar linkages.
lines can form, is also named after Roberts, who published the theorem (with an unconvincing proof) in 1889.