| Official Name: | Qeydu |
| Native Name: | قيدو |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Markazi |
| Subdivision Type2: | County |
| Subdivision Name2: | Khomeyn |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Galehzan |
| Population As Of: | 2006 |
| Population Total: | 301 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 33.6639°N 50.3144°W |
Qeydu (Persian: قيدو, also Romanized as Qeydū; also known as Ghidoo, Kaidu, Kāydū, Key Dū, and Qedu) is a village in Galehzan Rural District, in the Central District of Khomeyn County, Markazi Province, Iran. At the 2006 census, its population was 301, in 100 families.