It's extremely rare to see a Native at the Academy Award ceremony. So it's worth noting that actor Duane Howard attended this year.
The Revenant's Duane Howard outfitted by Haida designer for Academy Awards red carpet
Dorothy Grant had one week to stitch outfit that could be seen by millions at Oscars
With Forrest Goodluck, Arthur RedCloud, and Leonardo DiCaprio. I think this photo was taken before or after the ceremony, but I'm not sure. It could've been taken somewhere else.
With Cate Blanchett.
Others at the Oscars
Meanwhile, another Native actor in The Revenant wasn't invited.
Despite controversy over #OscarsSoWhite, Canadian actress and Revenant star Grace Dove was not invited to the Academy Awards
As a newly elected member of the Academy, veteran actor Sonny Skyhawk was planning to attend the ceremony too:
Sonny Skyhawk Bringing His War Bonnet to Oscars, Fighting for His People
But I didn't see any reports from him or others about his being there.
For more on the subject, see Why Are Oscars So White? and #OscarsSoWhite 2016.