Theodor Lemba was an Estonian pianist and music educator, born in Reval (now Tallinn) on October 9, 1876. He was the older brother and first teacher of Arthur Lemba.
He graduated from the Saint Petersburg Conservatory in 1901, where he studied with Felix Blumenfeld and Karl van Ark. He later toured Europe and the Russian Empire, including as accompanist to Jan Kubelík. In 1904, he attended Theodor Leschetizky’s master class in Vienna.
From 1905 to 1914, Lemba co-directed the Gizhitsky Music School in Riga with Nikolai Alunan. He taught at the Petrograd Conservatory from 1915 to 1922 and became a professor there in 1919. After returning to Estonia in 1922, he taught at the Tallinn Conservatory until 1944.
His students included Roman Matsov, Eugen Kapp, Tekla Koha, and Raimond Valgre. Lemba emigrated to the United States in 1949 and settled in Great Falls. He died in Lindenhurst, New York, on May 16, 1962.