If I am still a minor, can I change the sex on my birth certificate?

Yes, the Constitutional Court through the rulings T-498 of 2017, T-675 of 2017 and T-447 of 2019 established that minors can change the sex component of their civil registry of birth before a notary.

According to Administrative Instruction No. 01 of 13 January 2020 of the Superintendence of Notaries and Registry, the following requirements must be met in order to change the sex of a person who is a minor:

1. Recognition of minors as subjects of rights under guardianship.
2. Consideration of their developmental stages and understanding of their decisions (evolving capacities).
3. Overcoming the threshold of understanding the concept of gender identity (5-7 years).
4. Simple copy of the civil registry of birth.
5. A simple copy of the identity card (in cases where the child is 7 years old).
6. Declaration by the minor that his or her decision is free, informed and qualified. In particular, according to the provisions of the constitutional body, it must be established that the request for change is free of coercion, voluntary and not imposed by a third party, and that it is made on the basis of prior and sufficient knowledge of the implications of the measure.

In addition, the notary's office must verify that the declaration of will made by the minor, in each case, is free (without coercion, force or undue interference), informed and with an understanding of its implications (scope). In no case may it require additional documentation or evidence.

Note: in the event that the legal representation of the minor is in the hands of a guardian, a defender or a family commissioner, the procedure cannot be carried out before a notary, but must be carried out before a judge, who will be responsible for establishing whether the procedure is appropriate.

The instruction can be consulted here: https://servicios.supernotariado.gov.co/files/content/instrucciones/2020/182951-InstruccinAdministrativaNo.01de2020.PDF