The baptismal font in acanthus baroque was created by sculptor Torsten Ottesen Hoff and was donated to the church in the 1720s. Along with the pulpit, altarpiece, and organ facade, the font is part of the church's original baroque interior. The baptismal font was donated by the rector of the Cathedral School, Jacob Rasch, and originally included a baptismal house.
The wooden sculpture of Mary was created by artist Turid Angell Eng (b. 1937) and was a gift to the church for its 300th anniversary in 1997.
In the marble floor directly in front of the baptismal font, there is a mosaic depicting the serpent from the Garden of Eden tempting Eve. God said to the serpent, "I will put enmity between you and the woman, between your offspring and hers; he will crush your head, and you will strike his heel." Symbolically, during the baptism, the priest "crushes" the serpent's head, thus trampling evil underfoot.