- YLF stands for Youth Leadership Forum
- YLF stands for Youth Leadership Foundation (various locations)
- YLF stands for Yttrium Lithium Fluoride
- YLF stands for Your Loving Father
- YLF stands for Yahoo Lending Facility (satire)
- YLF stands for Russian Young Leadership Fellows for Public Service Program (aka Russian-US Young Leadership Fellows for Public Service; International Research & Exchanges Board; Washington, DC)
- YLF stands for Youth Life Foundation (Washington, DC)
- YLF stands for Your Loving Friend
YLF