Sir Joseph Lambert Eustace, GCMG, GCVO (28 February 1908 – 2 November 1996) was a Saint Vincent and the Grenadines politician.
He was also an avid reader and national Chess Champion and enjoyed woodworking in his spare time.
He then built and operated his own oil and soap factory along with a cotton ginnery at Montrose from 1960 to 1967.
In 1963 he became a member of the Saint Vincent Labour Party headed by Robert Milton Cato and successfully contested the South Leeward seat in the 1964 election.
He was re-elected an MP in the 1967 election which the Labour Party won and then became Minister of Education until he resigned in 1971.