Sally Cahill is a Canadian voice, onscreen actress and painter.

She is known in video games for providing the original voice of Ada Wong in Resident Evil 2 (1998), Resident Evil 4 (2005), and Resident Evil: The Darkside Chronicles (2009). She even voiced Ada in an installment of the Resident Evil live-action film series, Resident Evil: Retribution (2012), dubbing the lines of Chinese actress Li Bingbing who physically portrayed the character. Sally also played the recurring role of Marjorie Jefferson on the Canadian TV series Wind at My Back (1997–2000).