Paper Leonid Davidovich (28 March 1940, Beryslav, Kherson Oblast, Ukraine) — mechanical engineer.

Leonid Paper was born into a family of employees. He began his working career in 1956 as a rebar worker at Dneprostroi. In 1957, he worked as a music instructor at the Young Pioneers’ House in Nova Kakhovka (Ukraine). In 1962, he graduated from the Odessa Technological Institute of Food and Refrigeration Industry.

In 1962–1963 he was senior equipment supervisor at the canning factory in Kherson, in 1963–1964 - enior supervisor at the meat processing plant in Mykolaiv (Ukraine), in 1964–1965 he was employed at a Ukrainian defence enterprise (P.O. Box 2). From1965 to1968 he was engineer in the chief power engineer’s department at the Elektromashzavod in Nova Kakhovka, in 1968–1970 - senior engineer for technical inspection at the Regional Council in Vinnytsia (Ukraine).

Later he moved to Latvia and worked as a first-category design engineer in the chief power engineer’s department at the VEF Production Association in Riga.