Kristel Vourna (born 11 February 1992) is a Greek swimmer. At the 2012 Summer Olympics in London, she competed in the Women's 100 metre butterfly. She took the 12th place overall, finishing 7th in the second semifinal in the 100 metre butterfly with a Greek record of 58.31 seconds. She also swam the anchor leg of Greece's 4 x 100 freestyle relay, but the team failed to qualify for the final, finishing in the 16th place.