- Capital: Doha
- Population: 2,831,000
- Surface Area: 11,490 km2
- Currency: Riyals (1 EUR=3.9552 QAR)
- Religion: Mostly Islam
- Belongs to: ACD, Arab League, GCC, IMF, UN, OPEC
- Capital: Muscat
- Population: 4,527,000
- Surface Area: 309,500 km2
- Currency: Omani Rials (1 EUR=0.4165 OMR)
- Religion: Mostly Islam
- Belongs to: ACD, Arab League, GCC, IMF, UN