Der or DER may refer to:

Places

Darkənd Darkənd (also, Dər, Dar, and Der) is a village and municipality in the Ordubad District of Nakhchivan Autonomous Republic, Nakhchivan, Azerbaijan. It is located in the south of the Ordubad-Nakhchivan highway, 15 km in the south-west from the ...

, Azerbaijan *

Dearborn (Amtrak station) The John D. Dingell Transit Center is an intermodal transit station in Dearborn, Michigan. It is served by Amtrak's ''Wolverine'' line as well as Suburban Mobility Authority for Regional Transportation (SMART) buses. The station is named after f ...

(station code), in Michigan, US *

Der (Sumer) Der ( Sumerian: ALUDi-e-ir , 𒌷𒂦𒀭𒆠 uruBAD3.ANki) was a Sumerian city-state at the site of modern Tell Aqar near al-Badra in Iraq's Wasit Governorate. It was east of the Tigris River on the border between Sumer and Elam. Its name was ...

, an ancient city located in modern-day Iraq *

d'Entrecasteaux Ridge The d'Entrecasteaux () Ridge (DER) is a double oceanic ridge in the south-west Pacific Ocean, north of New Caledonia and west of Vanuatu Islands. It forms the northern extension of the New Caledonia–Loyalty Islands arc, and is now actively su ...

, an oceanic ridge in the south-west Pacific Ocean

Science and technology

Derivative chromosome A derivative chromosome (der) is a structurally rearranged chromosome generated either by a chromosome rearrangement involving two or more chromosomes or by multiple chromosome aberrations within a single chromosome (e.g. an inversion and a deletio ...

, a structurally rearranged chromosome * Distinguished Encoding Rules, a method for encoding a data object, including public key infrastructure certificates and keys * Distributed Energy Resources *

∂ The character ∂ (Unicode: U+2202) is a stylized cursive '' d'' mainly used as a mathematical symbol, usually to denote a partial derivative such as / (read as "the partial derivative of ''z'' with respect to ''x''"). It is also used for the bo ...

, the partial derivative symbol * Deep energy retrofit, an energy conservation measure

Organizations

* Digital Education Revolution, former Australian Government-funded educational reform program * DER rental (Domestic Electric Rentals Ltd), a UK television rentals company * Documentary Educational Resources, a non-profit film producer and distributor

Other uses

* Defence (Emergency) Regulations, legal regulations promulgated by the British in Mandatory Palestine in 1945 *

Department of Environment Regulation The Department of Water and Environmental Regulation was formed on 1 July 2017, when the Department of Environment Regulation (DER) amalgamated with the Department of Water and the Office of the Environmental Protection Authority. It is respons ...

, former Western Australian state government department * Designated Engineering Representative, an individual appointed to approve, or recommend approval, of technical data to the Federal Aviation Administration {{disambiguation, geo