Popsugar Entertainment This Is Us This Is Us Season 3 Cast Here Are All the New and Returning Stars For This Is Us Season 3 24 August 2018 by Kelsie Gibson View On One Page Photo 1 of 22 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 1 Milo Ventimiglia as Jack Ventimiglia will reprise his role as everyone's favourite TV dad during flashbacks in season three. Previous Next Start Slideshow This Is UsTV