No. The Visa on Arrival can only be issued at the following airports:
- Tan Son Nhat International Airport (Ho Chi Minh City)
- Noi Bai International Airport (Hanoi)
- DaNang Airport (DaNang)
Note however that if you are issued a multiple entry visa, you can enter/exit Vietnam from any entry points (airports, sea ports, land check points) once you are inside Vietnam.