There is a ceremonial / testimonial water baptism (an ordinance in some denominations) which is at best only an outward expression of an inward transformation.

FYI I have been baptized in the Church of Christ and in the Southern Baptist Church. Some Baptist Churches will not accept transfer memberships without rebaptism.

But there is only one baptism that counts (is necessary for salvation).

Ephesians 4:5
5 One Lord, one faith, one baptism,

And according to John the water baptizer that baptism is the baptism of the Holy Ghost... namely our faith and his indwelling.

Ephesians 1:13
13 In whom ye also trusted, after that ye heard the word of truth, the gospel of your salvation: in whom also after that ye believed, ye were sealed with that holy Spirit of promise,

1 Corinthians 3:16
16 Know ye not that ye are the temple of God, and that the Spirit of God dwelleth in you?