D. or d. may refer to, usually as an abbreviation: *

Don (honorific) Don (; ; pt, Dom, links=no ; all from Latin ', roughly 'Lord'), abbreviated as D., is an honorific prefix primarily used in Spain and Hispanic America, and with different connotations also in Italy, Portugal and its former colonies, and Croati ...

, a form of address in Spain, Portugal, Italy, and their former overseas empires, usually given to nobles or other individuals of high social rank. * Date of

death Death is the irreversible cessation of all biological functions that sustain an organism. For organisms with a brain, death can also be defined as the irreversible cessation of functioning of the whole brain, including brainstem, and brain ...

, as an abbreviation. *

District of Columbia Department of Transportation The District Department of Transportation (DDOT, stylized as d.) is an agency of the government of the District of Columbia, in the United States, which manages and maintains publicly owned transportation infrastructure in the District of Colum ...

, whose logo is "d." * ''

Schubert Thematic Catalogue ''Schubert: Thematic Catalogue of all his Works in Chronological Order'', also known as the Deutsch catalogue, is a numbered list of all compositions by Franz Schubert compiled by Otto Erich Deutsch. Since its first publication in 1951, Deutsc ...

'', also known as the Deutsch catalogue (or D.), a numbered list of all compositions by Franz Schubert compiled by Otto Erich Deutsch. * a

penny A penny is a coin ( pennies) or a unit of currency (pl. pence) in various countries. Borrowed from the Carolingian denarius (hence its former abbreviation d.), it is usually the smallest denomination within a currency system. Presently, it is t ...

, from the Latin ''denarius''.

See also