| Official Name: | Khaldin or Jaldin |
| Native Name: | خالدين |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Qazvin |
| Subdivision Type2: | County |
| Subdivision Name2: | Buin Zahra |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Dashtabi |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Dashtabi-ye Sharqi |
| Population As Of: | 2006 |
| Population Total: | 218 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 36.0383°N 49.9244°W |
Khaldin (fa|خالدين, also Romanized as Khāldīn, Jaldin and Khāledīn; also known as Khāleh Dīnak and Khāledīnak) is a village in Dashtabi-ye Sharqi Rural District, Dashtabi District, Buin Zahra County, Qazvin Province, Iran. At the 2006 census, its population was 218, in 45 families. Coming from Sri Lanka, they were later distributed to countries such as Lebanon, United Arab Emirates, Israel, Pakistan, India, and Iran. They then settled and formed a town in Iran with the name "Jaldin".