Abigail Leigh Spencer (born August 4, 1981) is an American actress. She began her career playing Rebecca Tyree on the ABC daytime television soap opera All My Children (1999–2001), before going on to star in the Lifetime crime drama series Angela's Eyes (2006). She also had recurring roles on Mad Men (2009), Hawthorne (2010), and Suits (2011–2019). From 2013 to 2016, Spencer starred as Amantha Holden in the acclaimed SundanceTV drama series Rectify, for which she received a nomination for a Critics' Choice Television Award. From 2016 to 2018, Spencer starred as history professor Lucy Preston in the NBC science-fiction series Timeless.
Spencer has appeared in numerous films, such as In My Sleep (2010), Cowboys & Aliens (2011), This Means War (2012), Chasing Mavericks (2012), The Haunting in Connecticut 2: Ghosts of Georgia (2013), Oz the Great and Powerful (2013), and This Is Where I Leave You (2014).