Lawrence A. MacAulay (born September 9, 1946 in St Peters Bay, Prince Edward Island ) is a Canadian politician.

MacAulay is a current member of the Liberal Party of Canada in the Canadian House of Commons, representing the riding of Cardigan, Prince Edward Island since 1988. MacAulay is a former farmer. He is a former Minister of Labour, Solicitor General of Canada, Secretary of State (Veterans) and Secretary of State (Atlantic Canada Opportunities Agency). He was also the Official Opposition Critic for Seniors