Name Act Article 9

A person meeting one of the following conditions may apply to change his/her given name:1. The applicant is an employee of a public or private sector enterprise, entity (organization), association, or school or has studied at a school in which another person has the same surname and given name;2. The applicant has the same given name as an elder relative within three degrees of kinship;3. The applicant has the same surname and given name as another person who has also been registered at a household registry in the same particular municipality, county, or city for more than six months;4. The applicant has the same surname and given name as a criminal suspect for whom an arrest warrant has been issued;5. The applicant’s paternity has been acknowledged by the biological father or the acknowledgment thereof has been revoked, or the applicant has been adopted, or his/her adoption has been annulled or terminated;6. The applicant’s name is unflattering or has an excessively long Romanized form , or other special considerations exist; or7. The applicant is a Taiwan indigenous person and applies to change his/her given name based on culture and customs.People applying to alter their given name under subparagraph 6 of the preceding paragraph may be granted this privilege only thrice. However, in the second instance, the applicant must have already reached the age of majority.
中文原文 姓名條例第9條
有下列情事之一者,得申請改名:
一、同時在一公民營事業機構、機關(構)、團體或學校服務或肄業,姓名完全相同。
二、與三親等以內直系尊親屬名字完全相同。
三、同時在一直轄市、縣(市)設立戶籍六個月以上,姓名完全相同。
四、與經通緝有案之人犯姓名完全相同。
五、被認領、撤銷認領、被收養、撤銷收養或終止收養。
六、字義粗俗不雅、音譯過長或有特殊原因。
七、臺灣原住民族基於文化慣俗。
依前項第六款申請改名,以三次為限。
但未成年人第二次改名,應於成年後始得為之。

English translation for reference only; the Chinese text prevails. Not legal advice.