Vietcombank sold the dollar at VND25,980, same as Thursday.
The State Bank of Vietnam hiked its reference rate by 0.13% to VND24,886.
Unofficial exchange points sold the dollar 0.45% higher at VND26,036.
The greenback has risen 1.68% against the dong since the beginning of the year.
Globally the U.S. dollar struggled to regain its footing with the safe-haven yen hovering near a six-month peak on Friday, as traders took stock of the fallout from President Donald Trump's aggressive and far-reaching new tariff measures, Reuters reported.
The dollar was steady after bouncing off six-month troughs to the euro and sterling overnight, with the focus now turning to a crucial monthly U.S. payrolls report later in the day for clues on the health of the economy and the outlook for monetary easing.
The dollar index, a measure of the currency against a basket of six major peers, plunged 1.9% on Thursday, its worst day since November 2022.
The greenback edged down 0.15% to 145.89 yen, after alternating between smalls gains and losses in early trading on Friday.
It slumped 2.2% in the prior session, and dipped as low as 145.19 yen for the first time since October 2.