The Canton of Gonfreville-l'Orcher is a former canton situated in the Seine-Maritime département and in the Haute-Normandie region of northern France. It was disbanded following the French canton reorganisation which came into effect in March 2015. It had a total of 20,031 inhabitants (2012).

An area of light industry, oil refineries and some farming, in the arrondissement of Le Havre, centred on the town of Gonfreville-l'Orcher. The altitude varies from 0m (Gonfreville-l'Orcher) to 107m (Gainneville) for an average altitude of 79m.

The canton comprised 3 communes:

• Gainneville
• Gonfreville-l'Orcher
• Harfleur

Historical population of Canton of Gonfreville-l'Orcher
(Source: INSEE)

Year	1962	1968	1975	1982	1990	1999
Population	18282	19578	21429	21637	21601	20825
From the year 1962 on: No double counting—residents of multiple communes (e.g. students and military personnel) are counted only once.

• Arrondissements of the Seine-Maritime department
• Cantons of the Seine-Maritime department
• Communes of the Seine-Maritime department

49°30′35″N 0°13′56″E / 49.50972°N 0.23222°E / 49.50972; 0.23222