From Cambodia, visitors can apply for a visa through one of the embassy of Vietnam in Cambodia below or apply for a Vietnam visa  online. Here below is the specific address of Vietnam Embassy you may concern:

Embassy of the S.R. of Vietnam Consular Department
422 Boulevard Monivong
Phnom Penh
Cambodia
City: Phnom Penh
Phone: (+855-23) 723142, 362531
Fax: (+855-23) 427385
Email: embvnpp@camnet.com.kh

Consulate General of the S.R. of Vietnam
Road No. 3
Batambang
Cambodia
City: Batambang
Phone: (+855-53) 952894
Fax: (+885-53) 952894
Email: lsqvnbat@camintel.com

Consulate General of the S.R. of Vietnam
Shianoukville
Cambodia
Phone: (+855-15) 344635
Fax: (+855-15) 345361
Email: consul@camintel.com

Besides, citizens in Cambodia can select among 3 options to get visa to Vietnam:

–          Visit Vietnam Embassy in Cambodia or in any other countries to get Vietnam visa done there.

–          Apply for Vietnam visa on arrival at https://vietnamvisaonentry.com/apply-online/ and pick up your visa at one of 3 international airports in Vietnam

–          Apply for Vietnam visa code at https://vietnamvisaonentry.com/apply-online/ and get visa stamped at Vietnam Embassy where you wish to pay a visit to.