Documents had confirmed the birth dates of farmers Cao Vien, 106, and Vu Thi Hai, 100, according to the Vietnam Guiness Book Centre, its director Le Tran Truong An told dpa.
"We have sufficient evidence that proves their date of birth," he said.
The couple, from Nghe An province in central Vietnam, married in 1933. They have eight children, and 122 grandchildren and great-grandchildren, An said.
"Their secret to longevity is to always be happy and have a suitable diet," An added.
DPA