Les Fusiliers du St-Laurent (French pronunciation: [le fyzilje dy sɛ̃ lɔʁɑ̃]) is a Primary Reserve infantry regiment of the Canadian Army.

It was first raised in 1869 but also perpetuates the 4th Battalion, Select Embodied Militia, from the War of 1812.

From 1954 to 1968, as a reserve regiment, it also was given a subsidiary title as the 5th Battalion of the Royal 22e Régiment.

On 6 August 1914, details of the 89th Temiscouata and Rimouski Regiment were placed on active service for local protection duties.

[1] The regiment, and the older units it perpetuates, have rendered front line service in three conflicts.