Albrecht Willem "Pim" Lier (born July 22, 1918) is a retired Dutch lawyer and jurist. He became well known in 1979 when he was revealed to be the Illegitimate son of Duke Henry of Mecklenburg-Schwerin, the prince consort and husband of Queen Wilhelmina. That made him a half brother of the then Queen Juliana and the uncle of current Queen Beatrix. He became a member of the Centre Party in 1984 and served as chairman until 1986.