Lazare Kopelmanas

July 1] 1907 in Kaunas, Russian Empire; died December 9, 1980, in Paris, France) was an international jurist and diplomat.

His older brother was Lithuanian businessman and public figure Moisey Kopelman.

Shortly after his graduation in 1935, he began to teach at its Institut des hautes études internationales and became professor in 1939.

After liberation he came back to the University of Paris, where his doctoral dissertation earned him Prix de thèse for the year 1945.

From 1949 to 1961 he was Legal Adviser to the United Nations Economic Commission for Europe (UNECE), and from 1961 to 1977 - adviser to the United Nations Office at Geneva in matters concerning legal aspects of trade, industry and technology transfer.