Unofficial exchange points sold the greenback at VND24,830, up 0.12% from Sunday.
Vietcombank kept the greenback unchanged at VND24,530.
The State Bank of Vietnam kept its reference rate unchanged at VND23,933.
The dollar has risen against the dong by 0.45% since the beginning of the year.
Globally the dollar was steady on Monday ahead of a key U.S. inflation report later in the week for further clarity on the Federal Reserve's monetary policy outlook, after markets got off to a hesitant start to the year as rate cut bets were pared, Reuters reported.
The yen struggled near the 145 per dollar level pressured by a broad bounce in the dollar, while the Australian and New Zealand dollars were nursing losses having fallen sharply last week amid cautious risk sentiment.
Against the yen, the dollar rose 0.05% to 144.67, extending its gain from last week when it jumped 2.6% on the Japanese currency, its best weekly performance since June 2022.