The Canton of Dieppe-Est 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 consisted of 8 communes, which joined the canton of Dieppe-2 in 2015. It had a total of 18,293 inhabitants (2012).

A farming, light industry and fishing area in the arrondissement of Dieppe, centred on the port and town of Dieppe.

The canton comprised 8 communes:

Historical population

Year	Pop.	±%
1990	19,336	—
1999	19,555	+1.1%
2012	18,293	−6.5%

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

49°55′51″N 1°09′25″E / 49.93083°N 1.15694°E / 49.93083; 1.15694