An abbreviation of the word simulation

Space Interferometry Mission, a NASA project to determine distances of stars

Dave Sim, author of the comic book Cerebus the Aardvark

Simming, text-based Role-playing game

A single Sim

Subscriber Identity Module, a smart card used in cellular phones

Sim games, real-time strategy/simulation games usually developed by Maxis and published by Electronic Arts

Sim Wong Hoo, founder of the world-leading entertainment manufacturing company, Creative Technology]

Alastair Sim, the actor

SIM from Tricycle Inc., a carpet simulation based upon computer-aided design or CAD

Sim River, a river in Chelyabinsk Oblast, Russia

Sim, Perm Krai, a settlement in Perm Krai, Russia

Sim, a Korean surname

Student information management, see student information system

Sim (Star Trek), a fictional character in the TV series Star Trek: Enterprise

"Sim (Pencil Game)", a pencil game

Studio for Interrelated Media, an art concentration at the Massachusetts College of Art

Singapore Institute of Management

Siberian International Marathon

Sheila Sim, the actress

Sudan Interior Mission, now called Serving In Mission, an international, interdenominational Christian mission organization

Sim, Chelyabinsk Oblast, a town in Chelyabinsk Oblast, Russia

Simple Instant Messenger

Security Information Management, an approach to securing data

Security Information Management System

The Sims and its sequel The Sims 2, strategic life simulation computer games by Maxis