2D
2D or 2-D may refer to:

Two-dimensional Euclidean space
2D geometric model
2D computer graphics
2-D (character), a member of the virtual band Gorillaz
Index finger, the second digit (abbreviated 2D) of the hand
Oflag II-D
Stalag II-D
Transcription factor II D
Two Dickinson Street Co-op, a student dining cooperative at Princeton University
2D animation, or traditional animation
Two-dimensional correlation analysis
Nintendo 2DS, the third iteration in the Nintendo 3DS line, released in 2013
New Nintendo 2DS XL, the sixth iteration in the Nintendo 3DS line, released in 2017 and a larger version of the 2DS
2degrees, New Zealand telecommunications provider
Twopence (British pre-decimal coin), routinely abbreviated 2d.

See also
D2 (disambiguation)
IID (disambiguation)