C. S. Williams (fl. c. 1845 – 1846) was an American engraver and publisher active in Philadelphia during the middle part of the 19th century. Williams is elusive and we have been unable to definitively isolate much information about him. He engraved for H. S. Tanner and his imprint and copyright is associated with several important Tanner atlas maps issued between 1845 and 1846. Similarly, his imprint carries over to Tanner legacy maps issued by Samuel Augustus Mitchell maps until about 1850. There are references to a engraver by the name of C.S. Williams in New Haven, Connecticut, active in the 1830s, as well as to a C. S. Williams active in Ohio in the 1860s. It is unclear if these are the same person, or, completely unrelated engravers.