The first meeting of the alumni association was held on October 27, 1937. John P. Kidd was the first president. The Association of Alumni of Sir George Williams College was incorporated in the Province of Quebec on September 16, 1957. Sir George Williams College became Sir George Williams University (SGWU) in 1959, and the organization's name changed to the Association of Alumni of Sir George Williams University in 1961. Following the merger of SGWU with Loyola College to form Concordia University in 1974, the Association renewed its constitution.

The Association published a quarterly brochure which was titled "Quarterly News-Letter" from 1944 to 1950, and "The Postgrad", from 1951 until 1968. Then the "Postgrad Newsletter" was published from 1968 to 1971, which was a followed by "The Garnet", which appeared from 1972 to 1977.

The objectives of the Association are to encourage the fellowship of graduates from Sir George Williams Schools, College, and University, through social, educational, and cultural activities; to establish and maintain a link with all graduates; to promote the interests of the university through alumni involvement in its governance; to raise funds and recruit students; to develop an awareness by the students of the university in the association by the furthering of student welfare; to promote the establishment of chapters of the Association; to strengthen the relationship with the Loyola Alumni Association and the Concordia University Alumni Association, with the intent to coordinate the activities of the associations, and to participate in the solicitation of funds and to promote a common interest by all alumni/ae in the university.

In 2014, the Concordia University Alumni Association (CUAA), Association of Alumni of Sir George Williams University and Loyola Alumni Association have united. On May 28, at special general meetings, the associations unanimously approved amalgamating into one organization.