Lilias Evva Massey (formerly Van Buskirk; née Ahearn; 1918 – January 19, 1997) was a Canadian dignitary, who served as châtelaine of Rideau Hall during her father-in-law Vincent Massey's term as Governor General of Canada. Vincent Massey was a widower whose wife Alice died 18 months before his appointment as Governor General. Lilias, who was married to Vincent and Alice Massey's son, Lionel, is to date the only person to have served as the official host or hostess of Rideau Hall who was not the Governor General's spouse.