Which John? There are at least 100 saints named John.
No, John Coltrane is not a canonized saint.
No, John Carroll is not a canonized saint in the Catholic Church.
John of God as canonized on October 16, 1690, by Pope Alexander VIII.
John was never officially canonized as a saint. He would have been proclaimed a saint by popular acclaim early in the history of the Church. There was no official canonization process in place at the time.
Saint John Vianney was canonized by Pope Pius XI on May 31, 1925.
There are a number of saints named John. Please be specific.
Pope John Paul II is not yet a canonized saint nor is he a patron saint.
St. John Fisher was canonized in 1935 by Pope Pius XI.
John was canonized on October 16, 1690, by Pope Alexander VIII.
He was canonized on December 9, 1962, by Pope John XXIII.
Yes, he will be canonized, along with Blessed Pope John XXIII, on April 27, 2014.
Saint Juan Diego was canonized by Pope John Paul II on July 31, 2002.