Silvana Petra Tirinzoni (born 25 June 1979) is a Swiss curler from Zurich. She is currently the reigning women's world champion skip having won the last three championships, in 2019, 2021 and . Tirinzoni also represented Switzerland at the 2022 Winter Olympics and 2018 Winter Olympics, after winning the 2017 Swiss Olympic Curling Trials. Career In 1997, Tirinzoni was the Swiss alternate for Bianca Röthlisberger at the World Junior Curling Championships. The team finished seventh. The following year, Tirinzoni was the Swiss skip at the World Juniors, and she and her team of Michèle Knobel, Brigitte Schori and Martina von Arx finished sixth. In 1999, the same team returned to the Juniors and won the whole tournament for Switzerland. After finishing the round robin in second place with a 7–2 record, Tirinzoni led Switzerland to a semi-final win over Sweden's Matilda Mattsson and a final win against Japan (skipped by Akiko Katoh) to win the gold medal. In 2005 Tirinzoni finished fourth at the Swiss Olympic trials. The following year she qualified for the 2006 World Women's Curling Championship, her first. Her Swiss team finished in tenth place with a 3–8 record. Tirinzoni returned to the 2007 World Women's Curling Championship with nearly the same team as in 2006, adding veteran Mirjam Ott to the lineup. Ott moved into the third position when the team began with three losses, and they nearly came back to qualify for the playoff round. Switzerland fell just short, finishing fifth with a 6–5 record. Later that year, Ott returned the favour by making Tirinzoni her alternate at the 2007 European Curling Championships. Tirinzoni would not see any action, and the team finished fourth. In 2011, Tirinzoni won her first World Curling Tour event, the Red Deer Curling Classic. She would not play in an international championship until 2013 when she skipped Switzerland at the 2013 World Women's Curling Championship. After finishing the round robin with a 6–5 record, she found herself in a three-way tie for fourth. After beating Russia's Anna Sidorova in the first tiebreaker, she lost to the United States' Erika Brown in the second, settling for fifth place. Since then, Tirinzoni has won several World Curling Tour events, including the 2013 International Bernese Ladies Cup, the 2013 Stockholm Ladies Cup, the 2013 Women's Masters Basel and the 2014 Pomeroy Inn & Suites Prairie Showdown. Tirinzoni and her rink began the 2014–15