Vietcombank sold the greenback at VND26,413, up 0.004% from the weekend. On the black market, the currency rose 0.02% to around VND27,556 on the black market.
The State Bank of Vietnam's reference rate inched 0.004% higher to VND25,156.
Globally, the U.S. dollar began the month on the back foot on Monday as investors ramped up bets of a U.S. rate cut this month, Reuters reported.
Bank of Japan Governor Kazuo Ueda gave a more upbeat outlook of Japan's economy and said the central bank will consider the "pros and cons" of raising interest rates at its next policy meeting in December.
That helped the Japanese currency extend gains, climbing 0.4% to a session high of 155.49 per dollar.
In the broader market, the dollar eased as investors braced for a pivotal month that could bring the Fed's final rate cut of the year and the confirmation of a dovish successor to Chair Jerome Powell.
The euro was up 0.04% at $1.1605, while sterling last bought $1.3239, after having clocked its best week in over three months on Friday in a relief rally following British Finance Minister Rachel Reeves' budget reveal.
Against a basket of currencies, the greenback was down 0.05% to 99.39, having lost 0.7% last week.