Vietcombank sold the greenback at VND26,311, a 0.008% uptick from the weekend. The currency climbed 1.12% to around VND27,200 on the black market.
The State Bank of Vietnam raised its reference rate by 0.008% to VND25,059.
Globally, the dollar surged on Monday as soaring oil prices sent investors scrambling for cash on worries that a protracted Middle East war could severely disrupt energy supplies and hurt global growth, Reuters reported.
The broad market rout triggered indiscriminate selling across assets. Stocks, bonds and precious metals slid as investors, spooked by the impact of surging oil prices on global inflation and economic growth, turned risk-averse and cashed in on some of their most profitable trades.
The euro last traded 0.9% lower at $1.1517, having slid to a 3-1/2-month low earlier in the session, while sterling slid 1% to $1.3294.
Against the Swiss franc, the dollar was up 0.75% at 0.7817. The Australian and New Zealand dollars slid 0.77% and 0.5%, respectively.
The dollar was a whisker away from the 159 yen level in Asia, rising 0.55% to 158.70, and it jumped 1% against the South Korean won to 1,496.40.
"The U.S. dollar's finding no shortage of support from traditional haven considerations and obviously, the U.S.' net energy exporter status in sharp contrast to most of Europe," said Ray Attrill, head of FX strategy at National Australia Bank.