EO 111: Standard Philippine Names for the Kalayaan Island Group

Executive Order No. 111 adopts an official set of Philippine names for 131 features of the Kalayaan Island Group in the West Philippine Sea.

Last reviewed: September 21, 2026General legal information, not legal advice

EO 111: Standard Philippine Names for the Kalayaan Island Group

What happened: Executive Order No. 111, signed March 26, 2026, adopts a standard set of Philippine names for 131 features of the Kalayaan Island Group in the Municipality of Kalayaan, Palawan, and the West Philippine Sea.

Legal question

Why is the Philippines formally naming features in the West Philippine Sea?

Applicable laws and rules to discuss

Why this matters

Formally naming maritime features is both an administrative and a sovereignty-assertion act. It gives Philippine government agencies, cartographers, and international bodies a consistent, official reference set for features the Philippines maintains claims over, complementing the Maritime Zones Act's declaration of baselines and zones.

The legal frame

The Order operates alongside RA 12064 (Maritime Zones Act) and RA 9522 (baselines law), giving official Philippine names to 131 identified features as part of the broader legal architecture asserting Philippine sovereignty and sovereign rights consistent with UNCLOS and the 2016 arbitral award.

Who this affects

Government mapping agencies (NAMRIA), maritime law researchers, and anyone producing official Philippine maps or navigational charts should use the newly adopted names going forward.

Practical discussion points

Readers can ask PHLaw.AI how the Maritime Zones Act and this naming Order relate to the 2016 South China Sea arbitral award.

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Try: "How does Executive Order No. 111 relate to the Philippine Maritime Zones Act and the West Philippine Sea?"

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