Southeast Asia's Largest Telecommunication Companies by Market Capitalization

Southeast Asia has developed into one of the world’s most dynamic telecommunications markets, driven by rising smartphone adoption, mobile data consumption, 5G deployment, fiber broadband, cloud computing, and digital infrastructure.

Based on market capitalization, the region’s largest telecommunications companies demonstrate the significant scale and financial importance of the sector.

At the top of the ranking is Singtel, Singapore’s telecommunications giant, with a market capitalization of US$61.03 billion. Its regional investments and extensive telecommunications operations make it the most valuable company in Southeast Asia’s telecom sector.

Advanced Info Service (AIS) of Thailand ranks second at US$32.34 billion. AIS is a leading Thai mobile operator and has expanded its business into broadband and digital services.

Telkom Indonesia ranks third with US$16.99 billion. The state-owned company is a major force in Indonesia’s telecommunications industry through businesses including Telkomsel, broadband, data centers, and digital infrastructure.

True Corporation of Thailand follows in fourth place at US$15.46 billion, strengthened by the merger of True and DTAC and its resulting position in Thailand’s highly competitive telecom market.

Malaysia’s CelcomDigi ranks fifth with US$9.07 billion, followed by Indonesia’s Indoritel at US$7.71 billion and Telekom Malaysia at US$7.47 billion. Axiata Group, another major Malaysian telecommunications company with operations across Asia, ranks eighth at US$5.46 billion.

The Philippines contributes two companies to the ranking. PLDT occupies ninth place with a market capitalization of US$4.49 billion, while Globe Telecom ranks tenth at US$4.23 billion. Indonesia continues its strong representation with Indosat, valued at US$4.15 billion, followed by XL Axiata at US$3.19 billion.

Singapore’s NetLink Trust ranks thirteenth with US$3.07 billion, reflecting the importance of fixed broadband and telecommunications infrastructure. Indonesia’s Elang Mahkota Teknologi follows at US$2.67 billion, while Tower Bersama Infrastructure completes the top 15 with US$2.08 billion.

Overall, the ranking highlights the strength of Singapore, Thailand, Indonesia, Malaysia, and the Philippines in Southeast Asia’s telecommunications industry. Together, these companies illustrate how the region’s telecom sector is evolving beyond traditional mobile services toward 5G, fiber networks, data centers, cloud computing, and broader digital infrastructure.