Miguel de Irízar y Domenzain (1635–1684) was a Spanish Baroque composer.
Irízar was born in Artajona and trained as a choirboy in León and Toledo.
The correspondence of Irízar preserved in the cathedral of Segovia archives contains a total of 362 letters received during the period 1663 to 1684.
The correspondence also includes extensive detail on performance practice.
[2] The letters indicate in particular the wide and rapid circulation of villancicos between different cathedrals.