YFUN stands for Youth for United Nations (2000-2008; now UN Youth Association of the Philippines)
YFUW stands for Youth For a United World
YFVA stands for Yuma Fresh Vegetable Association (Arizona)
YFWP stands for Youth Federation for World Peace (Washington, DC)
YFX stands for Youth Field Xpress
YFYFC stands for Yorkshire Federation of Young Farmers Clubs
YFYI stands for Youth Funding Youth Ideas (San Francisco, CA)
YFRS stands for Youth and Family Resource Services (Wallingford, IA)