S3D

S3D or S-3D may refer to:


 * Stereoscopic 3D, see stereoscopy
 * 3D film, films with S-3D
 * Stereoscopic video game, video games with S-3D
 * S3D, a supercomputer project that models the molecular physics of combustion
 * S3D, a diode electrical component
 * Rocketdyne S-3D, a rocket engine used in early US ballistic missiles