Vietcombank sold the dollar at VND25,025, down 0.02% from Monday.
The State Bank of Vietnam lowered its rate by 0.06% to VND24,168.
The greenback gained 0.20% to VND25,300 on the black market.
It has risen 2.39% against the dong since the beginning of the year.
Globally the dollar clung to seven-week highs against major currencies on Tuesday as investors ponder the outlook for U.S. rates after a strong jobs report last week dashed bets for large rate cuts, while escalating tensions in Middle East dented risk sentiment, Reuters reported.
The dollar index, which measures the U.S. unit against major rivals, last fetched 102.41, just below the seven-week high of 102.69 it touched on Friday.
A shallower path of cuts from the Fed, coupled with strong data and the prospect of a 'no landing' scenario has helped support the dollar, said Kieran Williams, head of Asia FX at InTouch Capital Markets.
"While the dollar has room to strengthen from here, given the hawkish repricing post-FOMC other catalysts may be necessary."