The company, a subsidiary of South Korean confectionary maker Orion Corp., said Vietnamese sales grew at 38% year-on-year, Yonhap newspaper reported.
Orion Food Vina owns several popular Vietnamese snack brands such as ChocoPie, Tonnies and Custas.
ChocoPie accounted for 43% of sales in the third quarter.
The company has a factory each in the southern Binh Duong Province and northern Bac Ninh Province.
It plans to build a third and become the biggest confectionary company in the country.