APO meaning in Associations & Organizations ?

Alpha Phi Omega (ΑΦΩ), commonly known as APO, but also A-Phi-O and A-Phi-Q, is a coeducational service fraternity. It is the largest collegiate fraternity in the United States, with chapters at over 350 campuses, an active membership of over 25,000 students, and over 400,000 alumni members. There are also 250 chapters in the Philippines, one in Australia and one in Canada. The 500,000th member was initiated in the Rho Pi chapter of Alpha Phi Omega at the University of California, San Diego.

Alpha Phi Omega is a national co-ed service fraternity organized to provide community service, leadership development, and social opportunities for college students. The purpose of the fraternity is "to assemble college students in a National Service Fraternity in the fellowship of principles derived from the Scout Oath and Scout Law of the Boy Scouts of America; to develop Leadership, to promote Friendship, and to provide Service to humanity; and to further the freedom that is our national, educational, and intellectual heritage." Alpha Phi Omega's primary focus is to provide volunteer service within four areas: service to the community, service to the campus, service to the fraternity, and service to the nation and world.

Being primarily a service organization, the fraternity restricts its chapters from maintaining fraternity houses to serve as residences for their members. Alpha Phi Omega does not restrict its members from being members of any other organization.