Usievalad Makaravich Ihnatoŭski (Belarusian: Усевалад Макаравіч Ігнатоўскі, romanized: Usyevalad Makaravich Ihnatowski; Russian: Все́волод Мака́рович Игнато́вский, romanized: Vsevolod Makarovich Ignatovsky; 19 April 1881 — 4 February 1931) was a Belarusian politician, scholar and the first president of the National Academy of Sciences of Belarus.

Ihnatoŭski, the son of a teacher, was born in the village of Takary, Hrodna governorate of the Russian Empire (now Kamianiec district of Brest region in Belarus).

He spent some time in various prisons and in exile in the North of Russia but ultimately graduated from Dorpat (Tartu) University in 1911.

In December 1930, he was removed as President of the National Academy of Sciences of Belarus and the following month expelled from the Communist Party as "a leader of the national-democratic counterrevolution.

"[1][2] He was called for questioning at the State Political Directorate (GPU) in connection with the Case of the Union of Liberation of Belarus and after one such interrogation committed suicide on 4 February 1931.