Natallia Alyakseyewna Arsiennieva[a] (20 September 1903 – 25 July 1997) was a Belarusian playwright, poet and translator who authored the lyrics to the hymn "Mahutny Boža" ("Almighty God").

Arsiennieva was born on 20 September 1903 into a middle-class family in Baku, a major oil-producing centre of the Russian Empire (today the capital of Azerbaijan).

[4] Arsiennieva worked for a regional Soviet newspaper but was soon arrested and deported as a "bourgeois nationalist intellectual" to Kazakhstan with her two sons.

However, in early 1941, she was released after a petition by the Belarusian Union of Writers and moved to Minsk, where during the German occupation she also collaborated with the Nazis, working for the pro-Nazi Belaruskaya Gazeta.

Since Gorbachev's perestroika, her poems have gained popularity, especially "Prayer", which, set to music by composer Mikola Ravienski, has become the hymn "Mahutny Boža" ("Almighty God").