The canton of Saint-Omer-Nord is a former canton situated in the department of the Pas-de-Calais and in the Nord-Pas-de-Calais region of northern France. It was disbanded following the French canton reorganisation which came into effect in March 2015. It consisted of 9 communes, which joined the canton of Saint-Omer in 2015. It had a total of 15,714 inhabitants (2012).

The canton is organised around Saint-Omer in the arrondissement of Saint-Omer. The altitude varies from 0 m (Houlle) to 166 m (Moringhem) for an average altitude of 23m.

The canton comprised 9 communes:

• Cantons of Pas-de-Calais
• Communes of Pas-de-Calais
• Arrondissements of the Pas-de-Calais department

50°46′27″N 2°12′47″E / 50.77417°N 2.21306°E / 50.77417; 2.21306