Catholic Alumni Clubs International: Single - Catholic - Professional Catholic, Alumni, Club, CAC, organization, association, group, join, single, singles, professional, friendship, friends, meet, people, activities, events, social, sports, travel, convention, dance, party, dinner, dining, Mass, church, charity, volunteer, community service, theater, leadership An association of Catholic Alumni Clubs (CAC's) located throughout the United States. Each CAC is a local organization for professional Catholic singles providing social, recreational, athletic, travel, spiritual, charitable, cultural, and leadership opportunities.