Der

Der or DER may refer to:

Places

• Darkənd, Azerbaijan
• Dearborn (Amtrak station) (station code), in Michigan, US
• Der (Sumer), an ancient city located in modern-day Iraq
• d'Entrecasteaux Ridge, an oceanic ridge in the south-west Pacific Ocean

Science and technology

• Derivative chromosome, 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 partial derivative symbol
• Derivation (differential algebra) on an algebra A over a field K, the space (module) of which is denoted Der_K(A)
• 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, 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