Delta

• Δ or δ, a letter of the Greek alphabet. See delta (letter)

• A triangular area of alluvial deposit at the mouth of a river, roughly in shape of Δ. See river delta.

• The large triangular region of alluvial deposit at the mouth of the river Nile in Egypt, bordering the eastern Mediterranean Sea. See Nile Delta.

• Δ, in math, to express a change or difference in values, e. g. temperature

• In mathematical finance delta, , is one of "The Greeks"; delta measures the sensitivity of the value of a derivative to changes in the price of its underlying instrument.

• The oldest active Chapter of Alpha Phi Omega. See Delta (chapter)

• The letter D in the NATO phonetic alphabet, except in airports

• A female in police CB code. (Alpha represents a male)

• A type of connection in three phase electrical wiring.

• The Netherlands' "Delta" project to significantly reduce the risk of flooding in Holland.

• An airline company, Delta Air Lines

• A Greek dairy producer and manufacturer, See Delta Holdings S.A

• Penelope Delta, a Greek writer/poet?

• 1st SFOD-Delta, a US counterterrorist unit.

• A computer, see Delta (computer)

• The Australian actress, singer and songwriter Delta Goodrem

• The American actress Delta Burke

• The German psychedelic trance project The Delta