| S# | Name of Sub-Metropolitan City | District |
| 1 | Itahari | Sunsari |
| 2 | Dharan | Sunsari |
| 3 | Janakpur | Dhanusa |
| 4 | Hetauda | Makawanpur |
| 5 | Kalaiya | Bara |
| 6 | Jitpur Simara | Bara |
| 7 | Butwal | Rupandehi |
| 8 | Tulsipur | Dang |
| 9 | Ghorahi | Dang |
| 10 | Nepalgunj | Banke |
| 11 | Dhangadi | Kailali |
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