Stephen Gary "Woz" Wozniak (born August 11, 1950 in San Jose, California) is an American computer engineer who co-founded Apple Computer, Inc. (now Apple Inc.) with Steve Jobs and Ronald Wayne. His inventions and machines are credited with contributing significantly to the personal computer revolution of the 1970s. Wozniak created the Apple I and Apple II computers in the mid-1970s.
Wozniak has several nicknames, including "The Woz", "Wonderful Wizard of Woz" and "iWoz" (a reference to the ubiquitous naming scheme for Apple products). "WoZ" (short for "Wheels of Zeus") is also the name of a company Wozniak founded. He is sometimes known as the "Other Steve" of Apple Computer, the better known Steve being co-founder Steve Jobs. He has Polish ancestry.