The 1st/3rd Lancers Battalion (French: 1/3 Bataillon de Lanciers) is an infantry battalion in the Land Component of the Belgian armed forces.

It is an amalgamation of the former 1st Lancers Regiment and the 3rd Lancers Regiment which has been re-roled to an infantry battalion but maintains cavalry customs and traditions.

The amalgamated unit served in Kosovo.

It will again be reoriented towards a light cavalry role when the Jaguar vehicles are delivered.

This article about the military of Belgium is a stub.