August Daniel Wiera (28 March 1853 Jaama manor, near Tartu – 26 March 1919 Tartu) was an Estonian theatre and music personnel. Under his guidance, the Vanemuine Cultural Society's theatre collective became semi-professional.[1][2]
With Wiera's help, the Estonian theater became semi-professional and the group's membership grew to one hundred.[3]
In 1878 he become the head of Vanemuine Cultural Society. Until 1903 he worked at Vanemuine Cultural Society. Until 1913 he worked mostly at Bürgermusse.[1][4]
He was the first in Estonia to introduce the new genre of music theatre.[1][5]