David Blis (originally Blissnianski, Bliznianski) (1872–1942), was a Polish-born Jew, who emigrated to the Americas. He was born in Grodno, Poland (now Belarus), and married his Chilean-born wife, a Sephardic Jew, in Argentina in 1906. He emigrated from Mexico to Cuba in 1913. This was a time when many people left Mexico due to the Revolution of 1912. It was the same David Blis, who was the primary motivator behind the resolution of the Cuban Senate formally supporting the Balfour Declaration in a vote on 30 April 1919. He died in Havana, Cuba in 1942 and is buried in the Guanabacoa cemetery.