Katherine Willis is an American actress and producer, best known for her roles as Myrtle Hale in Killers of the Flower Moon (2023), Diana Lord in Tell Me Your Secrets (2021), and Joanne Street in Friday Night Lights (2006). She is also known for her work on: NBC's The Blacklist (2013), HBO's The Leftovers (2014), USA Network's Queen of the South (2016), and the Nat Geo miniseries The Long Road Home (2017).