| Official Name: | Ruiban-e Kuchak |
| Native Name: | رويبان كوچك |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Kermanshah |
| Subdivision Type2: | County |
| Subdivision Name2: | Gilan-e Gharb |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Howmeh |
| Population As Of: | 2006 |
| Population Total: | 85 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 34.3319°N 45.7489°W |
Ruiban-e Kuchak (Persian: رويبان كوچك, also Romanized as Rū’ībān-e Kūchak; also known as Ḩeydarīyeh Kūchak and Rūbīān-e Kūchak) is a village in Howmeh Rural District, in the Central District of Gilan-e Gharb County, Kermanshah Province, Iran. At the 2006 census, its population was 85, in 18 families. The village is populated by Kurds.[1]