Nikolai Nikolayevich Andreyev (28 July 1880 – 31 December 1970) was a physicist who specialized in the study of music and acoustics.
Andreyev was born to a government official, Nikolai Fedorovich and Alexandra Nikitichna Konvisarova.
He went to the classical gymnasium and after graduating in 1892, joined the military school where he studied mathematics and European languages, apart from excelling in music.
He joined the Higher Technical Institute in 1898 but was expelled for taking part in student agitations.
From 1918 he was professor of physics at Omsk and in 1920 he moved to Moscow to study acoustics with Abram Ioffe.