Celine Koller

Céline Koller (born February 7, 1996), is a Swiss curler from Adelboden. She currently plays lead on Team Elena Stern.

Koller first represented Switzerland on the international stage at the 2015 World Mixed Curling Championship, as lead for Yannick Schwaller. After going 7–1 in the round robin, they lost the quarterfinal game to Rasmus Wranå and Sweden. She returned two years later once again as lead for Schwaller. They were less successful this time, failing to make the playoffs after a 4–3 round robin record. Koller also played in the 2017 Winter Universiade where the swiss team finished fourth.

The 2018–19 season was a breakout year for Koller and her team of skip Elena Stern, fourth Briar Hürlimann and second Lisa Gisler. They played in four Grand Slam of Curling events including winning the 2018 Tour Challenge Tier 2 and the 2018 Women's Masters Basel World Curling Tour event.

Team Stern followed their great season with an even better one for the 2019–20 season. They had a quarterfinal finish at the 2019 Cameron's Brewing Oakville Fall Classic. They missed the playoffs at their next three events, the 2019 Stu Sells Oakville Tankard, the 2019 AMJ Campbell Shorty Jenkins Classic and the inaugural WCT Uiseong International Curling Cup. Next, Team Stern played in the 2019 Canad Inns Women's Classic and qualified for the playoffs threw the C side. They successfully defeated Eve Muirhead in the quarterfinals, Silvana Tirinzoni in the semifinals and Rachel Homan in the final to win the event. They also won the International Bernese Ladies Cup and the Schweizer Cup. For the first time ever, they qualified for the playoffs at a Grand Slam event where they lost to Tracy Fleury in the quarterfinals at the Masters. They also qualified for the playoffs as the number one seed at the National but they also lost in the quarterfinals, this time to Satsuki Fujisawa. Team Stern surprised many when they upset the defending world champion rink Silvana Tirinzoni in the 2020 Swiss Women's Curling Championship three times and defeated them in the final 6–4. The team was set to represent Switzerland at the 2020 World Women's Curling Championship before the event got cancelled due to the 2019–20 coronavirus pandemic. The Swiss championship would be their last event of the season as both the Players' Championship and the Champions Cup Grand Slam events were also cancelled due to the pandemic.

Koller is employed as a tourism merchant.