Ulyana Olyegovna Trofimova (; born 28 February 1990) is an Uzbekistani rhythmic gymnast.
Trofimova took up gymnastics at age five in Navoiy, Uzbekistan and then trained in Novogorsk center in Moscow. She won the silver medal in all-around at the 2010 Asian Games. She had her highest placement at the 2010 World Championships in Moscow finishing 12th in the All-around and was awarded the Alina Kabaeva Prize.
Trofimova competed in the individual all-around event at the 2012 Summer Olympics with a both injured ankles, which prevented her to fight for a top 10 spot she went to be placed 20th in qualifications. She retired after the end of the 2012 season.
Trofimova is studying at the Moscow State Pedagogical University.