Unofficial exchange points sold the greenback at VND23,815, up 0.06% from Wednesday.
Vietcombank kept its rate stable at VND23,910.
The State Bank of Vietnam’s reference rate was 0.02% higher at VND23,826.
The dollar has gained 0.76% over the dong since the beginning of the year.
Globally the greenback held near the center of its range this week against a basket of major peers, as investors awaited key U.S. inflation data later Thursday that could influence the path for Federal Reserve policy, Reuters reported.
The U.S. dollar index - which measures the currency against six counterparts, including the euro and yen - was little changed at 102.50 in the Asian morning, after trading roughly between 101.98 and 102.80 this week.
The dollar has benefited from safe-haven demand in the wake of an ongoing run of poor Chinese economic data, while the narrative continues to build for a soft landing for the U.S. economy as price pressures mitigate.