William Joshua Hopkins is an American actor. Some of his best known roles include Raymond Millbury on Ally McBeal (2001–2002), Grayson Ellis on Cougar Town (2009–2015), and Liam O'Connor on Quantico (2015–2016).

Quantico is an American thriller drama television series which aired on the American Broadcasting Company (ABC) from September 27, 2015, to August 3, 2018, with 57 episodes broadcast over three seasons. Produced by ABC Studios, the series was created by Joshua Safran, who also served as the showrunner. Mark Gordon, Robert Sertner, Nicholas Pepper and Safran are its executive producers. Michael Seitzman replaced Safran as the new showrunner and an executive producer in its third season, with Safran remaining as an executive producer.