OD

OD or Od may refer to:

Medicine

• Doctor of Optometry (O.D.)
• Osteochondritis dissecans, a medical disease affecting the joints of both humans and animals
• Overdose, the use of a drug in quantities greater than recommended
• OD, an abbreviation used in medical prescriptions for oculus dexter, ocular dexter, ocularis dexter, omne in die and "once daily"

Music

• O.D. (musician), a member of Velcra
• Oblivion Dust, a Japanese rock band
• Orphei Drängar, a Swedish male choir
• Overly Dedicated, a 2010 mixtape by Kendrick Lamar
• The OD EP, a 2012 extended play by Danny Brown
• One Direction, a British pop music band

Computing

• od (Unix), a Unix program
• Object Desktop, a suite of skinning and customization programs by Stardock, or ObjectDock, another program by the same company
• Optical disc

Travel

• In the travel sector, "OD" is often used as a contraction for "origin - destination" - a description of a journey by its departure point (Origin) and arrival point (Destination)

Other uses

• Odh or Od, a community in India and Pakistan, or their language
• Odic force or Od, a life force
• Ód or Óðr, a Nordic god
• Occupation Double, a Quebec reality show that started in 2003
• Old Diocesan, a former pupil of Diocesan College
• Old Dunelmian, a former pupil of Durham School
• Olive drab, a color, particularly of some United States Army uniforms
• Online dating
• Optical density
• Order of Distinction, a civil honour of Jamaica
• OD or Ordnance Datum, a vertical datum used in Great Britain as the basis for deriving altitudes on maps
• Organization development
• Original dance, the second part of an ice dancing competition
• Outside diameter, cylinder or pipe external diameter
• OD, the IATA code for flights operated by airline Malindo Air
• OD is the vehicle registration code for the German district of Stormarn, its capital being Bad Oldesloe.