Julien Auguste Marie Joseph, Baron Liebaert (22 June 1848 in Kortrijk – 16 September 1930 in Ternat) was a Belgian Member of Parliament, Senator and Minister for the Catholic Party.

Their daughter married representative and senator Jean Mahieu.

He was elected member of the provincial council (1877-1890) and deputy (1878-1890) of West Flanders.

In 1890 he was elected deputy for the constituency of Kortrijk and held this office until 1919.

[3] Liebaert went through a varied ministerial career for twelve years as: In 1912 he was appointed Minister of State and he became director (1912-1926) and governor (1927-1930) of the National Bank of Belgium.