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DFA: Married women can use maiden name in passport
Married Filipinas who wish to use their maiden name in their passports may now do so under the New Philippine Passport Law or Republic Act 11983.
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How can married women revert to their maiden names in passports? DFA explains
MANILA, Philippines ... photocopy of a PSA-issued Certificate of Live Birth or PSA Report of Birth. An original and photocopy of a PSA-issued Certificate of Marriage or PSA Report of Marriage.