Agustí Riera i Pau (July 2, 1876 – August 27, 1936) was a conservative Catalan politician and physician.

Agustí was the second child of the doctor Narciso Riera Isla, from Vilamarí (Pla de l'Estany) and Crescencia Pau Caulas of Besalu (Garrotxa).

He was appointed director of the Association of Communications and Public Works, position in which he performed effectively, expanding the area's infrastructure.

He helped improve the country and local road meshwork and extended the telephone line network.

[6] In 1933, as chairman of Catalanist Center, was named vice president of the Governing Council of the Catalan League.