| Unit Name: | 1st/3rd Lancers Battalion |
| Dates: | 12 September 2003 |
| Country: |  Belgium |
| Type: | Infantry |
| Command Structure: | Motorized Brigade |
| Role: | motorized infantry |
| Motto: | Vailant de ie burch (Valiant of the Burch) |
| Mascot: | Tiger |
| Garrison: | Marche-en-Famenne |
| Commander1: | Lieutenant Colonel Dourte |
The 1st/3rd Lancers Battalion (fr|1/3 Bataillon de Lanciers|links=no) 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 battalion is a motorized infantry unit of the Motorized Brigade. The amalgamated unit served in Kosovo. It will again be reoriented towards a light cavalry role when the Jaguar vehicles are delivered.[1]
The 1st/3rd Lancers Battalion comprises: