
Usually, no.
The Catholic Church recognizes a valid Christian Baptism and does not repeat Baptism.
Generally, Christian Baptism involves the use of water together with Baptism in the name of the Father, and of the Son, and of the Holy Spirit.
Because circumstances vary, the parish will ask where and how you were baptized and may request documentation.
Someone preparing for Baptism who has not previously been baptized.
A baptized Christian preparing for reception into full communion with the Catholic Church.
These terms are not interchangeable.
An already baptized Christian ordinarily:
Pastoral circumstances differ, so speak with your parish about your specific situation.
Tell the parish exactly what you know. Do not assume. The parish can investigate the circumstances.
Contact the church where the Baptism took place. If records cannot be located, explain the circumstances to the Catholic parish. They will advise you about what documentation or testimony may be necessary.
The Our Father, Hail Mary, and more — ready to learn by heart.
You don't have to have it all figured out before you begin.