| Mertert | |
| Settlement Type: | Commune |
| Mapsize: | 200px |
| Subdivision Type: | Country |
| Subdivision Name: |  Luxembourg |
| Subdivision Type1: | Canton |
| Subdivision Name1: | Grevenmacher |
| Leader Title: | Mayor |
| Unit Pref: | Metric |
| Area Rank: | of 100 |
| Elevation Max Rank: | of 100 |
| Elevation Min Rank: | of 100 |
| Population Rank: | of 100 |
| Population Density Km2: | auto |
| Population Density Rank: | of 100 |
| Timezone1: | CET |
| Utc Offset1: | +1 |
| Timezone1 Dst: | CEST |
| Utc Offset1 Dst: | +2 |
| Blank Name Sec1: | LAU 2 |
| Blank Info Sec1: | LU0001107 |
| Website: | mertert.lu |
Mertert (lb|Mäertert) is a commune and town in eastern Luxembourg, on the border with Germany. It is part of the canton of Grevenmacher. The commune consists of the towns of Mertert and Wasserbillig. Mertert has a river port on the Moselle, the largest in Luxembourg. The commune's administrative centre is Wasserbillig.
, the town of Mertert, which lies in the south of the commune, has a population of 1,861.[1]