The father in "How I Met Your Father" is widely believed to be Sid, played by Suraj Sharma. The show, a spin-off of "How I Met Your Mother," follows Sophie recounting events leading to meeting his father, and Sid emerges as the frontrunner for the role of Sophie's future husband and the father of her child. Although there is no official confirmation, multiple sources, including insights from former writers and fan theories, point to Sid as the father.