Tatsiana Piatrenia (also Tatyana Petrenya, Russian: Татьяна Олеговна Петреня, born 18 October 1981)[1] is a Belarusian trampoline gymnast, who has competed at four Olympic Games, with a best finish of fifth.

[2][4] In 2016, she reached the FIG World Cup final,[5] finishing second in the women's individual event.

[6] She finished fifth in women's individual final at the 2016 Games,[1][7] after having come first in the qualifying section of the event.

[8][9] In 2017, she won the women's individual event at the 2017 Trampoline Gymnastics World Championships,[10][11] and came third in the women's synchronised trampoline event alongside Maryia Makharynskaya.

[13] In 2014, she was awarded the Master of Sport of Belarus by Belarusian President Alexander Lukashenko.