Nikoghayos Tigranyan (19 (31) August 1856, Gyumri – 17 February 1951, Yerevan) was an Armenian composer, ethnomusicologist and pianist. He was granted the titles of People's Artist of Armenia (1933) and Hero of Labour (1936). In 1921, Tigranyan implemented the Braille System for the first time in Armenia at a Gyumri school, which he founded.
Blind since the age of 9, Tigranyan studied at the Vienna Institute for the Blind (1873–80) and Saint Petersburg Conservatory (with Rimsky-Korsakov). Tigranyan collected Armenian folk music, particularly mughams, which he used in arrangements (many for piano) and original works. Tigranyan was the first composer to translate such music into orchestral terms.