Daria Sergeyevna Nagornaya is a Russian former artistic gymnast. Primarily an uneven bars specialist, she is the 2015 World Champion, the 2015 European Champion, the 2014 World bronze medalist, and a four-time Russian national (2014–17) champion on the apparatus. She represented Russia at the 2016 Summer Olympics, winning a silver medal in the team competition. She was also a member of the gold-medal-winning team at the 2016 European Championships, the silver-medal-winning teams at the 2018 and 2019 World Championships, and the bronze-medal-winning teams at the 2014 World and 2014 European championships. She is married to Russian gymnast Nikita Nagornyy.

The 2015 World Artistic Gymnastics Championships was the forty-sixth edition of the Artistic Gymnastics World Championships. The competition was held from 23 October – 1 November 2015 at The SSE Hydro in Glasgow, United Kingdom, and is the first time that Scotland hosted the event. The competition served as a qualification for the 2016 Summer Olympics.