The most popular Apple suppliers in Vietnam include Foxconn and Luxshare and subsidiaries of Samsung, Intel and LG.
The only supplier it excluded from the list was Foster Electric with factories in Binh Duong and Da Nang.
China remains the biggest manufacturing hub for Apple, accounting for half of all manufacturers.
The biggest company in the world by market cap is said to be increasing its manufacturing activity in Vietnam, and is set to produce Apple Watch and Macbook in the country.
Vietnam will make 65% of Apple wireless AirPods by 2025 as the U.S. tech giant continues to shift its production away from China, JP Morgan analysts have forecast.