Vietcombank sold the greenback 0.004% lower at VND26,465. On the black market the dollar declined 0.41% to VND26,610.
Globally the dollar held steady on Thursday as markets awaited key U.S. non-farm payrolls data, while the yen's slide to 40-year lows against the greenback and thin trading ahead of a U.S. holiday kept traders on high alert for intervention, Reuters reported.
The dollar index, which measures the greenback against a basket of currencies including the yen and the euro, eased 0.02% to 101.38.
The dollar has been underpinned by rising expectations of Fed rate hikes this year. A resilient labour market has also bolstered the outlook for U.S. growth, after job gains exceeded expectations for the past three months. That has added to other sources of dollar support, including the rapid adoption of AI, which has helped draw capital into U.S. assets.
The euro traded at $1.138 against the U.S. dollar while sterling edged 0.06% higher to $1.3279.