| USSR | Ukrainian Soviet Socialist Republic 
| Others |
| USSR | Ultra Simple Skirmish Rules
| Others |
| USSR | Under Sorrowful Supervision Relationship
| Others |
| USSR | Underground Society of Secret Rhythm
| Others |
| USSR | Underground Society of Secret Rythm
| Others |
| USSR | Uninterrupted Silent Sustained Reading
| Others |
| USSR | Uninterrupted Sustained Silent Reading
| Others |
| USSR | Union of Socialist Soviet Republics
| Others |
| USSR | Union Of Soviet Socalist Rebublic
| Others |
| USSR | Union of Soviet Socalistic Republic
| Others |
| USSR | Union of Soviet Socialist
| Others |
| USSR | Union of Soviet Socialist Republic
| Others |
| USSR | Union of Soviet Socialist Republics
| Others |
| USSR | Union Soviet Socialist Republic
| Others |
| USSR | United Shuttles Smashing Right
| Others |
| USSR | United Soviet Socialist Republic
| Others |
| USSR | United Soviet Suicide Republican
| Others |
| USSR | United States Smoking Repression
| Others |
| USSR | United Stitching And Sewing Ring
| Others |