Don, Nord, a commune of the Nord département in northern France

Dôn, a mother goddess in Welsh mythology

an abbreviated/diminutive form of the American male title Donald.

inside English universities, traditionally, the head, fellow or even private instructor of a college (see likewise Superdon)

within Spanish and Italian, Don is the nobility title for a male, prefixed to a title, typically paired alone using the first/Christian name (e.g. Don Juan, Don Quijote, Don Giovanni). These are abbreviated when D.. A female for Don is Doña (eg. Doña Concepcion).

An (obsolescent) conversational term for the Spanish person. A word appears around Henry Newbolt's poem "Drake's Drum": ''"If the dons sight Devon, I'll quit the port of heaven..."''.

Don is also usually utilized as a general term for mafia bosses, coming from a Italian term

An Ashkenazi variant transliteration of Dan, the tribe of Israel.

Rivers

Don River, Russia, one of the independent lakes of Russia.

River Don, Scotland, a river in Aberdeenshire which rises in the Grampians and flows 131 km (82 miles) eastward to the North Sea at Aberdeen.

River Don, England, a river in South Yorkshire which rises in the Pennines and flows 112 km (Lxx miles) eastward to join a Yorkshire Ouse shortly before it, successively, flows into a Humber.

Don River, Toronto is one of two major lakes framing Toronto against Lake Ontario.

de:Don eo:Don fr:Don it:Don pt:Rio Don