Vietcombank sold the currency at VND26,370, down 0.08% from the weekend. On the black market, the greenback was firm at around VND26,480.
The State Bank of Vietnam lowered its reference rate by 0.04% to VND25,240.
Globally, a battered dollar edged marginally higher on Monday after a dismal U.S. jobs report and President Donald Trump's firing of a top labor official stunned investors and led them to ramp up bets of imminent Federal Reserve rate cuts, Reuters reported.
Against a basket of currencies, the dollar edged up 0.2% to 98.86, after sliding more than 1% on Friday.
The greenback recovered some of its losses against the Japanese currency on Monday, last trading 0.14% higher at 147.60 yen. Still, it was down about 3 yen from its peak on Friday. The euro fell 0.2% to $1.1560, while sterling eased 0.1% to $1.3263.