Karl August Hermann (23 September 1851 – 11 January 1909) was an Estonian writer, publicist, linguist and composer.
[1] Hermann was born in Võhmanõmme, Põltsamaa Parish, Kreis Fellin in 1851.
He studied linguistics at Leipzig University from 1878, graduating in 1880 and defending his PhD thesis, Der einfache Wortstamm und die drei Lautstufen in der estnischen Sprache (The simple stem and three phonetic levels in the Estonian language).
[1] He composed around 300 choral songs, including "Kungla rahvas" ('Kungla people') and "Oh laula ja hõiska" ('O sing and shout').
[1] In 1895 Karl August Hermann published a book in which he argued that Sino-Uralic and Altaic form one large linguistic family.