Victor Valentin Dreyer (15 February 1866 – 7 May 1944), known in religious life as Colomban Dreyer, was a French prelate of the Catholic Church who worked as a missionary bishop in North Africa and in the diplomatic service of the Holy See as the Apostolic Delegate to Indochina.
He attended the seminary in Saint-Dié-des-Vosges and then joined the Order of Friars Minor, taking the name Marie Colomban.
He held several posts within his order, including assignments in Canada, Rome, and the Holy Land.
On 27 June 1923, Pope Pius XI named him a titular bishop and the first Apostolic Vicar of the Rabat, Morocco.
[citation needed] On 11 March 1927, Pope Pius named him the first Apostolic Vicar of Suez Canal.