Short answer. Section 4 of RA 9048 allows a change of first name or nickname on three grounds: the name is ridiculous, dishonorable or hard to write or pronounce; the new name has long been habitually and publicly used; or the change will avoid confusion. A petition must fit one of these.
What the law says
The petitioner finds the first name or nickname to be ridiculous, tainted with dishonor or extremely difficult to write or pronounce.
RA 9048, Section 4 — Grounds For Changing First Name. Read the full provision →
The three grounds the law lists
Section 4 sets out when a change of first name may be allowed. The first ground is that The petitioner finds the first name or nickname to be ridiculous, tainted with dishonor or extremely difficult to write or pronounce. The second is that the new first name or nickname has been habitually and continuously used by the petitioner, who has been publicly known by it in the community. The third is short and practical: The change will avoid confusion. A petition must rest on one of these three.
How the grounds work
Each ground answers a real problem. A name that invites ridicule, carries dishonor, or is extremely hard to write or pronounce may be changed for relief from that burden. A name a person has genuinely and openly used for years may be formalised so the record matches life as lived. And where two names or entries cause genuine confusion, correcting the first name can resolve it. The grounds are specific; mere personal preference, without fitting one of them, is not enough on the face of the section.
What this route is and is not
RA 9048 makes the change of first name an administrative matter handled by the local civil registrar, rather than a court case, when it falls within these grounds. That said, the section states the grounds; the proof, the documents and the procedure are governed by the Act and its implementing rules. It also does not cover every change a person might want — changes to the surname or more contested corrections may fall outside this route. If you are considering a petition, match your situation honestly to one of the three grounds and ask the registrar what evidence that ground requires.
Meeting a ground is not automatic approval
There is a further point about how the decision is made. Fitting one of the three grounds opens the door; it does not force it. The petition is evaluated by the local civil registrar, and a denial may be elevated to the Civil Registrar General, so the outcome depends on the evidence you put forward, not on the ground alone. A first name changed through this route is also confined to the first name itself — the rest of the registered name stays as it is unless separately corrected. Present the ground you actually rely on with the documents that back it, since a bare assertion that a ground exists is not the same as proving it.