Ognon may refer to:
;Rivers in France
*
Ognon (Franche-Comté)
The Ognon () is a river of Eastern France. It is a left tributary of the Saône, which it joins in Pontailler-sur-Saône. Its source is in Haut-du-Them-Château-Lambert in the Vosges Mountains near the Ballon d'Alsace. Its length is and its ba ...
in Franche-Comté, tributary of the Saône
*
Ognon (Loire-Atlantique) in
Loire-Atlantique
* Ognon, which becomes the
Ornain
The Ornain () is a 116 km long river in northeastern France, right tributary of the Saulx (Seine basin). It is formed near the village Gondrecourt-le-Château by the confluence of the small rivers Ognon and Maldite. It flows generally nort ...
after its confluence with the
Maldite
;Others
*
Ognon, Oise, commune in France
* "Oignon" and (since the
1990 orthographic reform) "ognon" are the French language words for
onion
An onion (''Allium cepa'' L., from Latin ''cepa'' meaning "onion"), also known as the bulb onion or common onion, is a vegetable that is the most widely cultivated species of the genus ''Allium''. The shallot is a botanical variety of the onio ...
.
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