Unofficial exchange points sold the greenback 0.11% higher at VND26,450.
Vietcombank kept its rate unchanged at VND26,470.
Globally the sterling pound rose to an almost one-month high against the dollar and a one-year peak versus the euro as markets mulled central banks' likely response to the latest rise in energy prices stemming from the U.S.-Israeli war with Iran, Reuters reported.
Sterling rose to $1.345 on Friday, the highest since June 15, and was last up 0.1%. Meanwhile the euro fell to 85.18 pence, the lowest against the pound since late June 2025, before paring its losses to trade flat.