OTR

Look up OTR in Wiktionary, the free dictionary.
OTR or Otr may refer to:
Science and technology[edit]
- Off-the-Record Messaging, an instant messaging encryption protocol
- Oxygen transmission rate, of a substance
- × Otaara, a plant genus
Medicine[edit]
- Ocular tilt reaction, a form of skew deviation
Entertainment[edit]
- Old-time radio, a broadcasting era
- Off the Record with Michael Landsberg, a sports talk show
Music[edit]
- Otierre, an Italian hip hop band
Other uses[edit]
- OTR (convenience store), Australian petrol and convenience store chain
- Coto 47 Airport, in Costa Rica
- Occupational Therapist, Registered, Licensed
- Ótr, a mythical dwarf
- Over-the-Rhine, a neighborhood in Cincinnati, Ohio, US
- Over the road, truck drivers without schedule or route