The embassy said there is very few Vietnamese living in the area, and it is coordinating with Indonesian agencies to keep updated on latest information.
As of December 7 afternoon, quake fatalities climbed to almost 100 and more than 600 others were injured.
Search and rescue operation is underway, involving large numbers of military, police and disaster management forces as well as volunteers.
Indonesia often experiences earthquakes and volcanoes because it lies in the so-called Pacific Ring of Fire.
Aceh province was also hit by a 9.2 magnitude quake followed by a tsunami in 2004, which killed 120,000 people and severely devastated the locality.
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