In October alone, inflation fell 0.2 percent from September, as lifted restrictions in localities help boost goods transport and reduce stockpiling demand, General Statistics Office reported.
Demand for electricity and water also fell as the country transitioned from summer to fall while decreasing rents also contributed to lower inflation, it added.
Gold prices fell 0.21 percent from September as global rates dropped.
Vietnam targets to keep inflation rise under 4 percent this year.