John Sanford Posey (born February 7, 1956) is an American actor.
With a long career in guest spots in episodes of various television series, he may be best known for his six appearances as Dr. Conrad Fenris in Teen Wolf (2011–2017), a show starring his son, Tyler Posey.
He also had a recurring role as Judge Will Millstone in the first two seasons (2014–2015) of How to Get Away with Murder.
[1] He was born in Hartford, Connecticut, to Joan (Armstrong) and William McCutcheon Posey Jr.
When Bob Saget was initially unavailable for the pilot episode, John Posey was chosen to play Danny Tanner on the television series Full House and was cast in the unaired pilot; however, he was replaced by Saget for the series premiere when he was once again available.