Three agencies are believed to be in the running for the business, which includes media as well as creative.
Vietnam is one of Jollibee's priority markets, and the company has plans to expand in the fast-growing Southeast Asian country - although no marketing budget has been revealed.
Jollibee has outlets in the US, Saudi Arabia, Hong Kong, Indonesia, Dubai and Brunei as well as the Philippines and Vietnam.
Jollibee pitches in Vietnam
HO CHI MINH CITY - Jollibee is pitching its advertising business in Vietnam as the Filipino fast-food restaurant chain looks to challenge the market lead of KFC.