| FOB Arian | |
| Ensign: | Flag of the International Security Assistance Force.svg |
| Ensign Size: | 90px |
| Location: | Ghazni, Ghazni Province |
| Country: | Afghanistan |
| Pushpin Map: | Afghanistan |
| Pushpin Label: | FOB Arian |
| Pushpin Map Caption: | Shown within Afghanistan |
| Type: | Forward operating base |
| Ownership: | International Security Assistance Force (ISAF) |
| Operator: | United States Armed Forces Afghan National Army |
| Used: | 2005- |
| H1-Number: | 01 |
| H1-Length: | 30m x 30m |
| H1-Surface: | Asphalt |
| H2-Number: | 02 |
| H2-Length: | 30m x 30m |
| H2-Surface: | Asphalt |
Forward Operating Base Arian is a former forward operating base operated by the International Security Assistance Force (ISAF). It was originally Combat Post Arian, but in 2011 rapidly expanded to forward operating base size. It was in Ghazni Province, Afghanistan.[1]