SSIM (disambiguation)

SSIM may refer to:

General

 * Structural similarity in image processing
 * South Sudan Independence Movement
 * Saturated structured illumination microscopy
 * Standard Schedules Information Manual in aviation

Educational institutions

 * Swedish School in Moscow (Svenska Skolan i Moskva)
 * S. S. Institute of Medical Sciences, a medical school in Davanagere, Karnataka, India
 * Sri Siddhartha Institute of Management Studies in Tumkur, Karnataka, India