Popsugar Entertainment This Is Us This Is Us Season 4 Cast This Is Us Will Include a Few New Faces in Season 4 — Here's the Full Cast 19 June 2019 by Kelsie Gibson View On One Page Photo 2 of 15 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 2 Milo Ventimiglia as Jack Ventimiglia will be back as Jack, albeit with a slightly smaller role this time around. Previous Next Start Slideshow This Is UsTV