S.L.A.A. is not affiliated with any religion, sect, or denomination, though the program is spiritual in nature. Through developing a relationship with a Higher Power of our choosing, we learn to stop using addictive behaviors as a substitute for intimacy.
Many non-religious members choose the collective support of the group or a concept of the universe as their Higher Power. Your Higher Power is personal to you, and you are not required to believe in God(s) to attend meetings.