<Tr> <Th> Parent (s) </Th> <Td> Donald P. Bellisario Deborah Pratt </Td> </Tr> <Tr> <Th> Relatives </Th> <Td> Michael Bellisario (half - brother) Sean Murray (step - brother) </Td> </Tr> <P> Troian Avery Bellisario (/ ˈtrɔɪən ˌbɛlɪˈsɑːrioʊ /; born October 28, 1985) is an American actress . She is known for playing the role of Spencer Hastings in Freeform's Pretty Little Liars (2010 - 2017). </P> <P> Born in Los Angeles, California, she is the daughter of producers Donald P. Bellisario and Deborah Pratt . Bellisario made her acting debut in her father's 1988 film Last Rites at the age of three . She continued to have roles produced by her father, mainly in television shows such as Quantum Leap, First Monday, and NCIS, and in 1998, she acted in the direct - to - video comedy film Billboard Dad . In 2010, she received praise for her leading performance in the film Consent for which she won the Vision Fest Award for Best Acting by a Female Lead and the FirstGlance Philadelphia Award for Best Actress . </P>

Who plays spencer hastings in pretty little liars