DSN

DSN may refer to:

Computing & Internet

 * Data set (IBM mainframe) Name, the name of a computer file having a record organization
 * Data source name, a data structure used to describe a connection to a data source
 * Delivery Status Notification message, an automated electronic mail message about a delivery problem
 * Distributed social network, a social network that is decentralised and distributed across multiple providers
 * International Conference on Dependable Systems and Networks
 * .DSN (design file), industry-standard import file format of Specctra-compatible autorouters

Military and Intelligence

 * Defense Switched Network, a communications network operated by the United States Department of Defense
 * DSN DASH, the U.S. Navy's Drone Anti-Submarine Helicopter.
 * DSN Satellite Network, a Japanese military X band satellite communications network operated by DSN Corporation
 * Direktion für Staatsschutz und Nachrichtendienst (Directorate for National Security and Intelligence), an Austrian intelligence agency

Space

 * Deep Space Network, a communication network

Media and Entertainment

 * Direct Sports Network, a sports centered digital media company, based in Irvine, California

Others

 * Dansk Sprognævn, the Danish Language Council
 * Deutsche Schulen Nigeria, a school system which includes the Deutsche Schule Abuja
 * IATA code for Ordos Ejin Horo International Airport, China
 * Star Trek: Deep Space Nine, a science fiction television program
 * Doctor of Science in Nursing