T2D

T2D can refer to:
 * Type 2 Diabetes
 * Technology Transfer Database
 * Type-2 Copper-Depleted
 * Douglas T2D, an American twin-engined torpedo bomber, 1927–1937
 * River Torrens to Darlington (T2D) section of the North–South Motorway, South Australia.
 * T2D.com is a healthcare services company serving consumers that are Type 2 Diabetic.