| OSTA |
Optical Storage Technology Association |
| OSTM |
Open System Transaction Management |
| OSTP |
Office of Science and Technology Policy |
| OSVS |
Operating System Virtual Storage |
| OSZE |
Organisation für Sicherheit und Zusammenarbeit in Europa |
| OT |
Open Transport |
| OT |
Object Technology |
| OT |
Ordering Table |
| OT |
Oberer Totpunkt |
| OTA |
Ochratoxin A |
| OTA |
US Congress Office of Technology Assessment |
| OTD |
Optical Time Division |
| OTDM |
Optical Time Division Multiplexer/Multiplexing |
| OTDR |
Optical Time Domain Reflectometer |
| OTF |
Open Type Font |
| OTF |
Open Token Foundation |
| OTI |
Original Transmitter Identification |
| OTP |
Open Trading Protocol |
| OTP |
One-Time Pad/Password/Programmable |
| OTR |
One Touch Record/Recording |
| OTRS |
Open Ticket Request System |
| OUI |
Organizationally Unique Identifier |
| OUM |
Ovonic Unified Memory |
| OURS |
Open Users Recommended Solutions |
| out |
Outfile von OzWin Ii |
| OV |
Overflow |
| ov# |
Overlay-Dateien (PC-Tools) |
| OVG |
Oberverwaltungsgericht |
| OVL |
Overlay |
| ovl |
Overlay Tastatur u. Farbtreiber unter DOs |
| ovr |
Programmcode Overlay |
| OVST |
Ortsvermittlungsstelle |
| OWA |
Outlook Web Access |
| OWFS |
Optical WORM File System |
| OWG |
Optical Waveguide |
| OWiG |
Gesetz über Ordnungswidrigkeiten |
| OWL |
Object Windows Library |
| OZ |
OktanZahl |
| oä |
oder ähnlich |