| Saeul | |
| Native Name: | Sëll |
| Native Name Lang: | lb |
| Settlement Type: | Commune |
| Mapsize: | 200px |
| Coordinates: | 49.7269°N 5.9856°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Luxembourg |
| Subdivision Type1: | Canton |
| Subdivision Name1: | Redange |
| 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: | LU0000707 |
| Website: | saeul.lu |
Saeul (in Luxembourgish; Letzeburgesch pronounced as /ˈzəl/) is a commune and small town in western Luxembourg, in the canton of Redange. With a population of 983 as of 2023, it is the least populous commune in Luxembourg.
, the town of Saeul itself, which lies in the south-east of the commune, has a population of 524.[1]