Lois Van Valkenburgh (1920–2002) was an American lobbyist and legislative aide most known for her political and civil rights activism. She produced Virginia's first voter's guide in the 1940s and worked in the women's poll tax repeal movement. She also pressed for school desegregation in the Washington, D.C. metropolitan area. Active in many civic organizations, she founded and chaired the Alexandria Community Services Board for many years. She also served on the board of the Virginia Department of Behavioral Health and Developmental Services and in the 1970s was a legislative aide to Delegate Mary Marshall.