Horacio Matarasso (born January 6, 1967) is an Argentinian ornithologist and leader of South American bird watchers.

He joined Aves Argentinas in 1984 and studied Biology at the University of Buenos Aires, specialized in Ornithology.

From 1996 to 2014, he lived in northern Patagonia, where was director of the Centre for Ornithology Neuquén from Universidad Nacional del Comahue.

He has made several contributions to the Ornithology, including the discovery of 2 new species for Argentina: The Tenca (Mimus thenca) and the Slender-billed Parakeet Enicognathus leptorhynchus Since 1996 dictates Birding courses in different locations in Argentina and Chile.

He has participated as an honorary advisor of national and provincial governments, representing the country in meetings held in other continents (USA, England, etc.).