| Acronym | Meaning |
| RUB | Russian Ruble (ISO 4217 Currency Code) |
| MOTA | Member Of The Orthodontic Technicians Association |
| MKT | Missouri-Kansas-Texas Railroad (1865-1989) - Mortal Kombat Trilogy |
| SLAN | Sine Loco |
| COS | Cooper Ornithological Society |
| ZS | Zettasecond |
| IAB | International Association For Biologicals |
| KWD | Kuwaiti Dinar (ISO 4217 Currency Code) |
| CSK | Czechoslovakia (ISO 3166 Trigram; Obsolete Since 1993) |
| SYP | Syrian Pound (ISO 4217 Currency Code) |