Vietnam has made little progress in the latest corruption rankings by watchdog Transparency International.
The 2013 Corruption Perceptions Index, which measures the perceived levels of public sector corruption, sees Vietnam up just seven spots to 116th out of 177 countries and territories with a score of 31/100.
In Southeast Asia, it ranks seventh behind Singapore, Brunei, Malaysia, the Philippines, Thailand, and Indonesia.
The index draws on 13 surveys covering expert assessments and views of businesspeople.
It scores 177 countries and territories on a scale from 0 (highly corrupt) to 100 (very clean). No country has a perfect score, and two thirds of them score less than 50.
This year New Zealand and Denmark tie for first place with a score of 91. The duo had also been deemed the world's least corrupt last year alongside Finland.
In the Asia-Pacific, New Zealand is followed by Singapore, Australia, Hong Kong, and Japan.
The most corrupt countries are still Somalia, North Korea and Afghanistan, unchanged from last year.