The canton of Lens-Nord-Ouest 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 had a total of 16,928 inhabitants (2012).

The canton is organised around Lens in the arrondissement of Lens. The altitude varies from 27m (Lens) to 74m (Loos-en-Gohelle) for an average altitude of 33m.

The canton comprised 2 communes:

• Loos-en-Gohelle
• Lens (partly)

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

50°26′41″N 2°48′47″E / 50.44472°N 2.81306°E / 50.44472; 2.81306