Sinha Laksmiswar (June 6, 1905 in Rarisal in the north-east India - April 22, 1977 at Shantiniketan, India) was an Esperanto Indian education handicrafts teacher in Santiniketan, Bengal. He was a disciple and friend of Tagore, perhaps the most famous Asian Esperantist if one excludes Japan.
Sent to Sweden in 1928-29, he studied sloyd. In 1928 during a stay in Stockholm, he became an Esperantist, and passed all SEI examinations. At the initiative of Ernfrid Malmgren in September 1929 he began a lecture tour. In Sweden he traveled over 10,000 km, made more than 200 lectures to more than 30,000 people, and also twice on the radio. In autumn 1930 he toured in Estonia and Latvia, then for two months in Poland, 40 conferences in 22 cities in front of nearly 8000 people. In August 1931 he returned to India, where he worked for Esperanto writing articles and became the chief delegate of the UEA.
In autumn 1933 he returned to Sweden. In 1936 he published his book "Hindo Rigardas Svedlandon" (An Indian looks at Sweden). His translation of seven stories of Tagore "Malsata Ŝtono" (A hungry stone) was first published in the 1961 Serio Oriento-Okcidento.
The result of his efforts to create an Esperanto movement in India was the foundation of Bengala Esperanto-Instituto (Bengali Institute of Esperanto) in 1963 when his pamphlet appeared in Bengali Esperanto-Movado (Esperanto Movement). Eldona Societo Esperanto (Enterprise Edition Esperanto) published in 1966 in Sweden Sinha's autobiography Jaroj sur tero (Years on earth). Sinha's last work was published in 1974: Facila Esperanta lernolibro (Easy Esperanto Primer), in Bengali.