Justin Hartley (1977-yil 29-yanvarda tug‘ilgan) amerikalik aktyordir. U NBC telekanalining Passions (2002–2006) kunduzgi serialidagi Fox Crane, The CW telekanalining Smallville (2006–2011) serialidagi Oliver Queen/Green Arrow va CBS telekanalining The Young and the Restless (2014–2016) kunduzgi serialidagi Adam Newman rollari bilan tanilgan. Bu roli uchun u Emmy mukofotiga nomzod bo‘lgan. Hartley Revenge serialining uchinchi mavsumida Patrick Osbourne rolida takroriy qatnashgan. 2016-yildan beri u NBC drama seriali This Is Us’da rol o‘ynaydi, bu roli uchun esa Drama serialida eng yaxshi yordamchi aktyor uchun Critics' Choice Television Award mukofotiga nomzod bo‘lgan.
