Skip to main content
Dictionary
Store
Blog
World
Help
Advertise
Chat
System Status
Information Collection Notice
Trademark Concerns
reCAPTCHA Privacy
Terms of Service
reCAPTCHA Terms
Privacy Policy
Accessibility
Report a Bug
Data Request
Contact Us
Security
DMCA
© 1999–2026 Urban Dictionary ®
Mugs
Tees
Hoodies
Pro Customization
Create unique products with your own words and definitions
Preview
Personalize Your Design
Your Word
Your Definition
OIAA stands for "One In An ARMY" and is a collective effort by BTS's fans ARMY to use their huge numbers and social media power to make a positive impact on humanity and the world. Since BTS' mission is to help and heal people with their music, ARMY has decided to do the same. ARMYs commit to supporting a different charity or humanitarian organization every month by having OIAA research good causes and then set up the donation process. They use microdonations so that even ARMYs with very little money to spare can add their "one" to the entire effort and create real change for people around the world. Every ARMY is "One In An ARMY" and every "one" can make a difference.
Text fits
Save
Cancel