Sadie Robertson (born June 17, 1997) is a reality television star on the A&E show Duck Dynasty. She is the granddaughter of Phil Robertson, founder of Duck Commander. Her parents are Korie Howard Robertson and Willie Robertson, the company's current CEO. She is the younger sister of John Luke Robertson.

Robertson is a Christian and attends Ouachita Christian School in Monroe, Louisiana. In 2013, she ranked thirty-sixth in the state of Louisiana for javelin throwing.

On August 26, 2013, she started a YouTube channel entitled The New Different with friend and Preachers' Daughters star Kolby Koloff. She has not been seen on the show since January 13, 2014.

She sang "Away in a Manger" with Alison Krauss for her family's bestselling album, Duck The Halls: A Robertson Family Christmas.

Robertson designed her own dresses in a collaboration with Sherri Hill, and modeled them during New York Fashion Week. Robertson's line of dresses is labeled Live Original by Sadie Robertson.

She has publicly stood up for her grandfather after his controversial interview in GQ magazine.

On September 4, 2014, she was announced as one of the celebrities that will compete on Dancing with the Stars: season 19. She is paired with professional dancer Mark Ballas.