The Columbian Squires is an international youth fraternity run by the Knights of Columbus for Catholic boys between the ages of 10 and 18.

Its stated mission is "to develop young men as leaders who understand their Catholic religion, who have a strong commitment to the Church and who are ready, willing and capable of patterning their lives after the Youth Christ.

"[1] The Squires were established under the direction of Brother Barnabas McDonald, F.S.C., together with Supreme Director Daniel A. Tobin on August 4, 1925.

[2][3][4] At that time there was a national interest in youth in the United States, as reflected by the development of the Boy Scouts of America and the Big Brother movement.

[citation needed] Squires circles have been instituted throughout the United States, Canada, Mexico, the Philippines, Cuba, Panama, Guatemala, Puerto Rico, the Bahamas, the Virgin Islands, Guam, and various United States Air Force bases abroad.