Pietro Ricaldone (born in Mirabello Monferrato, Italy on 27 July 1870; died in Turin on 25 November 1951) was a Catholic Roman Priest of the Salesians of Don Bosco, who was the 4th Rector Major of that Order between 1932 and 1951.

He did his first years of education in Alassio and then moved to Borgo San Marino where he knew Don Bosco – he would meet the saint only two times in his life.

In 1901 was elected Superior of the Spanish Province, but also he is appointed to visit the Salesian houses in the Western Hemisphere as well as Egypt and Palestine.

In 1936 the Salesians suffered a great persecution during the Spanish Civil War in a country that was very near to his heart.

In 1951 Ricaldone reported that there were 1,900 Salesians deported, banished from their own nations or deprived from their freedom.