D2D

D2D may refer to:

Technology

 * Device-to-device, proximity-based direct communications between mobile nodes orchestrated by the cellular operator
 * Direct2D, a hardware-accelerated 2D API built on top of Direct3D 10
 * Direct2Drive, an online video game and entertainment distributor and retail store

Other uses

 * Door-to-door, a sales or political technique for engaging an audience
 * Dot to Dot Festival, a music festival in the United Kingdom
 * Delhi 2 Dublin, a Canadian world music band