- Capital: Doha
- Population: 2,781,677
- Surface Area: 11,610 km2
- Currency: Riyals (1 EUR=4.4160 QAR)
- Religion: Mostly Islam
- Belongs to: ACD, Arab League, GCC, IMF, UN, OPEC
- Capital: Muscat
- Population: 4,179,000
- Surface Area: 309,500 km2
- Currency: Omani Rials (1 EUR=0.4665 OMR)
- Religion: Mostly Islam
- Belongs to: ACD, Arab League, GCC, IMF, UN