Tsvetelina Naydenova (; born ) is a Bulgarian former group rhythmic gymnast. She competed at two Olympic games in 2012 and 2016 and is a 2014 World champion in the group event.
Naydenova began rhythmic gymnastics when she was 4 at the Slavia club.
In 2011, Naydenova was a member of the group competing at the 2011 World Championships, where they won bronze in the all-around, as well as a gold (mixed apparatus) and a second bronze (5 balls) in the event finals. With their performance, they earned a quota to compete at the 2012 Summer Olympics.
At the 2012 European Championships, they were 4th in the group all-around, and in the event finals, they won silver with 3 ribbons + 2 hoops and bronze with 5 balls. Later that year, at the 2012 Summer Olympics, the Bulgarian group qualified for the final in 4th place, but they fell to 6th in the final.
Naydenova continued her competitive career after the Olympics. In 2014, she and her teammates became the all-around World champions; at the same competition, they won an additional silver medal in the 3 balls + 2 ribbons final. The next year, at the 2015 World Championships, they were the silver all-around medalists. In the 3 pairs of clubs + 2 hoops final, they also won bronze.
The next year, Naydenova was a member of the Bulgarian group that competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil. Her teammates were Lyubomira Kazanova, Mihaela Maevska, Reneta Kamberova, and Hristiana Todorova. In the final, they won the group all-around bronze medal. They dedicated their medal to their teammate Tsvetelina Stoyanova, who attempted suicide and fell from her apartment in Sofia.
After the Olympics, Naydenova retired from competing and began working on a degree at the National Sports Academy "Vasil Levski". In 2017, she was selected to be the assistant coach of the national junior group, with Vyara Vatashka acting as the head coach.