Greny is a former commune in the Seine-Maritime department in the Normandy region in northern France. On 1 January 2016, it was merged into the new commune of Petit-Caux.

A small farming village, Greny is situated in the Pays de Caux, some 9 miles (14 km) east of Dieppe on the D117 road.

The arms of Greny are blazoned : Vert, a chevron argent between 2 garbs and a tree, and on a chief Or a leopard gules.

Historical population of Greny

Year	1962	1968	1975	1982	1990	1999	2006	2011
Population	121	122	124	102	111	105	138	145
From the year 1962 on: No double counting—residents of multiple communes (e.g. students and military personnel) are counted only once.

• The church of St. Anne, dating from the seventeenth century.

• Communes of the Seine-Maritime department