USO
USO most often denotes the United Services Organization, a charitable network for armed‑forces members, and is also used in technical documents as the shorthand for 'unless stated otherwise'.
Miscellaneous
United States One
UnStarted Object
United States Oil
Understanding Strengthening Overcoming
United Services Organizations
United States Organizations
Understanding Strengthening and Overcoming
Community
Unverified Southern Object
United Services Organization
United Service Organizations
Understanding the Situation of Others
Governmental
Ultra Stable Oscillator
Unconfirmed Stories Organization
United Service Organization
Unidentified Submarine Object