Cause of death

Democratic Republic of the Congo (country code COD)

C.O.D., a 1983 comedy film

Certificate of deposit

Chemical oxygen demand

Call of Duty (series), a series of computer games

Cancellation of debt income

The Cult of Domesticity, a common perception of women's roles in society.

Circle of Dust, an Industrial Metal band

C.O.D., another song by Delbert McClinton, performed as Delbert & Glen on their self-titled debut album (1972)

Canadian Oxford Dictionary

Concise Oxford Dictionary

Yellowstone Regional Airport in Cody, Wyoming (airport code COD)

Cash on delivery

Cyclooctadiene, a chemical compound

Carrier onboard delivery

College of DuPage, a public Junior College with campuses in the suburbs of Chicago

Catastrophic optical damage, a failure mode of diode lasers

Click of death, an infamous symptom of a manufacturing defect in Iomega Zip drives

COD is the ICAO airline designator for Concordavia Limited, Ukraine

"Call Of Duty: My life before, during, and after the Band of Brothers" by the American World War II Paratrooper, Lt. Lynn "Buck" Compton

C.O.D., a song by Australian Hard Rock band AC/DC

City of Delusion, a song by Muse on their album Black Holes and Revelations

C.O.D.(Cash on Delivery), a Ray Cash album

C.O.D. (album), an album by Saint Vitus