4S may refer to:
Places 4S Ranch, California, an unincorporated community in San Diego County
Other uses iPhone 4S, the 5th generation of the iPhone Scandinavian Simvastatin Survival Study, a multicenter clinical trial that was performed in 1990s in Scandinavia Society for Social Studies of Science, a non-profit scholarly association devoted to the social studies of science and technology Toshiba 4S, a nuclear reactor Toyota S engine DS 4S, a car 4S, the production code for the 1977 Doctor Who serial The Talons of Weng-Chiang
See also
S4 (disambiguation) SSSS (disambiguation) Fours (disambiguation) S (disambiguation) 4 (disambiguation)