MCD

MCD (or derivative) may refer to:

A nickname for somebody with the surname McDonald (McD)
Attention-deficit hyperactivity disorder (ADHD), (formerly termed minimal cerebral dysfunction, MCD)
Bovine spongiform encephalopathy (commonly known as Mad Cow Disease, MCD)
In British archaeology, the Monument Class Descriptions produced by English Heritage
In airline jargon, MCD refers to Main Cabin Door, or the door on the aircraft most commonly used for boarding (usually the first or second door on the left side of the aircraft, depending on model)
Maxi single Compact Disc
Maximum Cultural Development
McDonald's (MCD), (stock symbol) (also used in military jargon: "Mike Charlie Delta")
Melbourne College of Divinity
milli candela (mcd)
mini compact disc, a discographical release containing fewer songs than an EP (MCD)
Minor civil division
Mesoscale discussion (MCD), forecast issued by the Storm Prediction Center
MCD (Me Cagüen Dios) was a Basque punk-rock band of the 80s