The father of Bridget Jones's baby is Mark Darcy. In the movie "Bridget Jones's Baby," Bridget is unsure whether the father is her ex-boyfriend Mark Darcy or Jack Qwant. After some uncertainty and a DNA test, it is revealed that Mark Darcy is the father of her child, William. The film ends with Bridget marrying Mark Darcy, and Jack remains a close figure in their lives, showing a friendly relationship between all three adults
. An alternate ending was filmed where Jack was the father, but the released version confirmed Mark Darcy as the father
. The cast themselves did not know the father's identity during filming, as the director kept it a secret to maintain suspense
