Od (Language), a language based in Pakistan.

One Day Match, a type of shorter match in cricket

For the Unix program od, see od (Unix)

Odessa, TX, a small city in West Texas

Organization development

Oblivion Dust, a Japanese rock band

For the life force Od, see Odic force

Original dance, the second part of an ice dancing competition

O.D., A member of Finnish industrial metal band Velcra

Olive Drab, as in OD Green

Optical density

Officer of the day

Orphei Drängar, a Swedish male choir

Outside diameter, a dimension commonly used to specify the size of tubing or pipe

Order of Distinction, a civil honour of Jamaica

Object Desktop, a suite of skinning and customization programs by Stardock, or ObjectDock, another program by the same company

Old Dragon, former pupil of the Dragon School

Old Derbeian, a former pupil of Derby School

OpenDocument, the only ISO acknowledged standard document file format

Ordnance Datum, a vertical datum used in Great Britain as the basis for deriving altitudes on maps.

Doctor of Optometry (O.D.)

Overdose, related to Drugs

OverDrive CPUs

For the Norse god Od, see Óðr

Od, a replacement for "God" in some minced oaths