DSN may refer to:

Technology

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 A bounce message or just "bounce" is an automated message from an email system, informing the sender of a previous message that the message has not been delivered (or some other delivery problem occurred). The original message is said to have "boun ...

message, an automated electronic mail message about a delivery problem *

Distributed social network A distributed social network or federated social network is an Internet social networking service that is decentralized and distributed across distinct service providers (similar to email, but for social networks), such as the Fediverse or the ...

, a social network that is decentralised and distributed across multiple providers * International Conference on Dependable Systems and Networks *

.DSN Specctra is a commercial PCB auto-router originally developed by John F. Cooper and David Chyan of Cooper & Chyan Technology, Inc. (CCT) in 1989. The company and product were taken over by Cadence Design Systems in May 1997. Since its integrati ...

(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 Gyrodyne QH-50 DASH (''Drone Anti-Submarine Helicopter'') is a small drone helicopter built by Gyrodyne Company of America for use as a long-range anti-submarine weapon on ships that would otherwise be too small to operate a full-sized hel ...

, 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 The NASA Deep Space Network (DSN) is a worldwide network of American spacecraft communication ground segment facilities, located in the United States (California), Spain (Madrid), and Australia (Canberra), that supports NASA's interplanetar ...

, a communication network

Media and Entertainment

Direct Sports Network Direct Sports Network or DSN (formerly DeskSite) is a digital media company based in Irvine, California. The company distributes sports programming with a focus on team-produced content. The network consists of individual team-specific apps (referr ...

, a sports centered digital media company, based in Irvine, California

Others

* ''Deutsche Schulen Nigeria'', a school system which includes the ''

Deutsche Schule Abuja German School Abuja (german: Deutsche Schule Abuja) is a German international school located on the grounds of the Julius Berger Life Camp in Gwarinpa, Abuja, Nigeria. Its classes go from kindergarten to class 5. The construction company Julius Ber ...

'' * IATA code for Ordos Ejin Horo Airport, China *''

Star Trek: Deep Space Nine ''Star Trek: Deep Space Nine'' (abbreviated as ''DS9'') is an American science fiction television series created by Rick Berman and Michael Piller. The fourth series in the ''Star Trek'' media franchise, it originally aired in syndication from ...

'', a science fiction television program * Doctor of Science in Nursing {{disambiguation