Vietcombank sold the dollar at VND23,730, up 0.04% from Wednesday.
Techcombank raised the rate 0.08% higher to VND23,755.
Eximbank maintained its rate at VND23,670.
The State Bank of Vietnam increased its reference rate by 0.10% to VND23,783.
The dollar was unchanged at VND23,630 on the black market.
Globally the U.S. dollar was little changed against a basket of major currencies on Thursday, after rising 0.5% overnight, aided by hawkish comments from Powell and quarter-end rebalancing flows.
The greenback is down 0.5% in the first half of the year after hitting a decade high last year.
The yen regained some composure on Thursday, rising 0.2% to 144.26, but still just a touch below an eight-month low of 144.62 hit overnight, with markets on egde for signs of intervention from Japanese officials.