2D

2D or 2-D may refer to:


 * Two-dimensional space
 * 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.