The canton of Cherbourg-en-Cotentin-1 (before March 2020: canton of Cherbourg-Octeville-1)Décret n° 2020-212 du 5 mars 2020 modifiant le décret n° 2014-246 du 25 février 2014 portant délimitation des cantons dans le département de la Manche is an administrative division of the Manche department, northwestern France. It was created at the French canton reorganisation which came into effect in March 2015. Its seat is in Cherbourg-en-Cotentin.

It consists of the following communes: Cherbourg-en-Cotentin (partly)

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