YYAYou, You're Awesome (band)
YYAYstävyys-, Yhteistyö- ja Avunantosopimus (Finnish: Agreement of Friendship, Cooperation & Mutual Assistance Treaty Finland & USSR)
YYAYouth and Young Adults Program (United Church of Christ Coalition for Lesbian, Gay, Bi, and Transexual Concerns; Cleveland, OH)
YYAYouth and Young Adult ministries (Church of the Brethren ministry for youth and young adults)