In June, she competed at the Canadian National Championships, besting reigning champion Ellie Black to win the all-around. She additionally won gold on uneven bars and balance beam, bronze on floor exercise, and placed fourth on vault. She then represented Canada at the 2016 Summer Olympics, where the team finished ninth. Individually, Onyshko finished 18th all around and 8th on beam. She became the first Canadian gymnast to make a beam final at the Olympics.
