Patrick John O'Connor, was a New Zealand/American amateur wrestler and professional wrestler. Regarded as one of the premier workers of his era, O'Connor held the AWA World Heavyweight Championship and NWA World Heavyweight Championship simultaneously, the latter of which he held for approximately two years. He was also the inaugural AWA World Heavyweight Champion. He is an overall two-time world champion.

The AWA World Heavyweight Championship was a professional wrestling world heavyweight championship and the highest ranked championship in the defunct American Wrestling Association (AWA). All AWA trademarks, including the AWA World Heavyweight Championship, are now owned by WWE. The championship was generally contested in professional wrestling matches, in which participants execute worked finishes rather than contend in direct competition.