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 8 of 22 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 8 Mackenzie Hancsicsak as Kate There's a pretty good chance we'll see Hancsicsak as young Kate in flashbacks. Previous Next Start Slideshow This Is UsTV