Guillermo Tritschler y Córdova (6 July 1878 – 29 July 1952) was a Mexican prelate of the Roman Catholic Church.
Born in 1878 to the German-born Martin Tritschler and Rosa Córdova, his he was raised mostly by his uncle, who sent him to study at the Collegio Pio-Latino-Americano Pontificioiand Pontifical Gregorian University in Rome.
He was ordained in 1904 and served as a seminary professor and later Canon Penitentiary of the Mexico City Metropolitan Cathedral.
In 1931 he was appointed Archbishop of San Luis Potosí, where he served until 1941, when he was appointed Archbishop of Monterrey.
He served in that position until his death on 29 July 1952.
His cause for canonization is open and the Congregation for the Causes of Saints recently conferred on him the title of Servant of God.