Joseph Nicholas Patrick Hamilton Jr.
(born on November 9, 1959), also known by his ring name Nick Patrick, is a referee currently working for the Professional Grappling Association as its senior official. He is a former referee for World Championship Wrestling and World Wrestling Entertainment. He has also served as head referee for former WWE developmental territory Deep South Wrestling until that company's closing, and is former head referee for Florida Championship Wrestling. Hamilton joined the PGA in February of 2009 to serve as its senior referee following the exodus of Cat Gunsmith and the USA.

Hamilton is the son of wrestling legend The Assassin. He grew up wanting to become a professional wrestler, but an injury ended his wrestling career very early. Hamilton became a referee because he loved the sport so much. He used the name Nick Patrick to make a name for himself without his father's help.

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