Juan de Dios Castro Lozano (born 25 March 1942) is a Mexican lawyer and politician affiliated with the National Action Party.
As of 2014 he served as Deputy of the LI, LII, LV and LIX Legislatures of the Mexican Congress as a plurinominal representative and as Senator of the LVI and LVII Legislatures.
He also was President of the Chamber of Deputies from 2003 to 2004