Surfing on Sine Waves is a studio album by the musician and producer Richard D. James under the alias Polygon Window. It is the only album released under this name; James is better known as Aphex Twin. The record was released on 11 January 1993 through Warp Records. It entered the Dance Albums Chart at No. 2 on 23 January 1993. James' previous album, Selected Ambient Works 85‍, ‍92, was then at No. 9 on the chart, and James briefly had two records in the Dance Albums Top 10 under different pseudonyms.