The actor announced on Twitter today (January 9) that his partner Rowena Finn has given birth to baby boy Harry.
"It's a boy! Row and I are delighted to announce the birth of our little bundle of joy. Harry weighted in at 6lb 7oz and mum is doing great," Bisson posted.
The 37-year-old's Emmerdale character Jai Sharma also recently became a father on the ITV1 soap, following a one-night stand with Rachel Breckle (Gemma Oaten).
However, Jai has been unable to tell anyone that baby Archie is his in order to keep his infidelity secret from wife Charity Sharma (Emma Atkins).
Speaking about the storyline, Atkins recently predicted that Charity will discover the true identity of Archie's dad.
"By hook or by crook, she will find out what is the secret," Atkins said. "She's got to find out! We'll see."
Emmerdale airs weeknights at 7pm on ITV1, with an extra episode on Thursdays at 8pm.