Natalie Dell O'Brien (born February 20, 1985), formerly known as Natalie Dell, is an American female crew rower. She won the bronze medal at the 2012 Summer Olympics in the quadruple sculls event. Natalie won a silver medal at the 2011 World Rowing Championships in Bled, Slovenia in the Women's quadruple sculls event. She is a three-time American national team member.