Mina Kobayashi

Kobayashi competed in her first Japan Curling Championships during the 2017–18 season as third for the Sapporo CA team. Her team, with skip Momoka Iwase, second Midori Sugasawa, lead Mao Hino and alternate Suzune Yasui finished seventh with a 2–6 record, only defeating Nayoro Association and Team Hiroshima.^[3] Kobayashi and her teammates were unable to return to the national championship the following year.

In 2019, Kobayashi was selected to play lead on the Japanese team for the 2020 Winter Youth Olympics. The team also included skip Takumi Maeda, third Momoha Tabata and second Asei Nakahara. In preparation for the event, the team represented Japan at the 2019 World Mixed Curling Championship where they finished 4–3 in the round robin, just missing the playoffs.^[4] At the Games, the team finished 4–1 in the preliminary round of the mixed team competition, earning them a spot in the playoffs. In the quarterfinals, they upset the top seeded Canadian team and went on to beat New Zealand in the semifinal.^[5] They then fell to Norway in the final, settling for silver.^[6] Kobayashi then competed in the mixed doubles competition with France's Léo Tuaz. The pair lost their final qualifying game, however, had the best draw shot total of the losing qualifiers which meant they qualified as the fourth seeds.^[7] They then lost both the semifinal and the bronze medal game, finishing fourth.^[8]

At the 2020 Japan Junior Curling Championships, Kobayashi and her team of Momoha Tabata, Mikoto Nakajima and Miku Nihira won the gold medal. This qualified them for the 2021 World Junior Curling Championships, however, the event was cancelled due to the COVID-19 pandemic.^[9]

In December 2021, Team Sayaka Yoshimura's contract expired with Hokkaido Bank.^[10] The team then formed their own team named Fortius and Kobayashi was added as their alternate.^[11] The lineup also included third Kaho Onodera, second Anna Ohmiya and lead Yumie Funayama. At the 2022 Japan Curling Championships, the team finished the round robin with a 4–4 record, enough to qualify for the playoffs. They then lost in the 3 vs. 4 page playoff game to Chubu Electric Power's Ikue Kitazawa.^[12]

In their first event of the 2022–23 season, Team Yoshimura won the 2022 Hokkaido Bank Curling Classic.^[13] They then won the Wakkanai Midori Challenge Cup two weeks later.^[14] In their next two events, they again reached the finals, losing the Argo Graphics Cup final to Sae Yamamoto and the ADVICS Cup final to Satsuki Fujisawa.^[15] After a successful start to the season, Yuna Kotani was added at the third position in September 2022.^[16] The revised lineup of the team was Yoshimura at skip, Kotani at third, Onodera at second, Ohmiya at lead and Kobayashi as alternate with Yumie Funayama becoming the team's coach. In Canada, the team had back-to-back quarterfinal appearances at the S3 Group Curling Stadium Series and the 2022 Western Showdown, losing out to Stefania Constantini and Meghan Walter respectively.^[17] In December, Team Yoshimura competed in the 2022 Karuizawa International Curling Championships where they finished third, beating Loco Solare (Fujisawa) in the bronze medal game. In the New Year, the team played in the 2023 New Year Medalist Curling where they lost in the semifinals to Daniela Jentsch. It would be the team's last event of the 2022–23 season as positive cases of COVID-19 within the team forced them to withdraw from their qualifying round of the 2023 Japan Curling Championships.^[18]

Kobayashi attended Hokkaido Sapporo Higashi High School and Hokkaido High Technology College.^[1]

• Mina Kobayashi at World Curling
• Mina Kobayashi at Olympedia