Oe

Oe or OE may refer to:

Language, linguistics, phonics and writing

Old English, the English language spoken in the Early Middle Ages
Œ or œ, a ligature of o and e used in the modern French and medieval Latin alphabets
Oe (digraph)
Open front rounded vowel or ɶ
Open-mid front rounded vowel or œ
Ö, a character sometimes representing 'oe', appearing in some Germanic, Turkic, and Uralic languages
Ø, a Northern European (Danish, Faroese, Norwegian) or Sami vowel, representing œ, 'oe' diphthong etc.
Ө, a letter in the Cyrillic alphabet

Ōe (surname), a Japanese surname
Kenzaburō Ōe, a major Japanese writer
Old Edwardian (OE), a former pupil of various schools named after a King Edward or St. Edward
Old Etonian (OE), a former pupil of Eton College, England

Ordem dos Engenheiros (OE), a Portuguese order of engineers
Order of Excellence of Guyana, the highest honour of Guyana
Okean Elzy, a Ukrainian rock band
OE, then-IATA code of Laudamotion, a former ultra low cost airline subsidiary of Ryanair Holdings

Cessna OE Bird Dog, a U.S. Marine Corps observation aircraft later redesignated O-1 along with the similar U.S. Army L-19
°Oe, a measurement on the Oechsle scale for the density of grape must
Oersted (Oe), a unit of magnetic field strength
On30 or Oe, a model railway gauge
OpenEmbedded (OE), a Linux-based embedded build system
Opportunistic encryption (OE), a means to combat passive wiretapping
Outlook Express, a former email program of Microsoft
Ophryocystis elektroscirrha, a parasite of monarch and queen butterflies

Odakyū Enoshima Line
OE, the aircraft registration prefix for Austrian aircraft
Overseas experience (OE), a New Zealand term for extended working holidays
Overview effect, the cognitive shift experienced by astronauts when viewing Earth from space