Rodrigo Sebastian Ratier (born May 21, 1969) is an Argentine composer, arranger, conductor and pianist from Buenos Aires, Argentina.

The first stage of his career took place in Argentina, where he founded the groups "Los Rodrigo Ratier Trio" (1986), "Vallegrande" (1987), "Atuel" (1991) and "La Puerta del Vino" (1994), with whom he has played at the main music venues of Buenos Aires and many other Argentine Cities.

There he founded the trio "Sur" (Latin-American jazz fusion) and since 2006 he conducts the music group "Rodrigo Ratier Quinteto" (Tango-Jazz).

Occasionally he committed as Sidemen various stars of the Chilean jazz, as Mickey Mardones, Rita Góngora and Fernando Verdugo, among others.

Said premiere was performed by Hana Gubenko on the soloist part, together with the Toulouse Chamber Orchestra under conduction of the Swiss composer and conductor Gilles Colliard.