Kaarlo Johan Jalmari "Kalle" Anttila (30 August 1887 – 10 October 1949) was a renowned Finnish wrestler. He achieved great success in his career, clinching Olympic gold medals in the freestyle lightweight category in 1920 and in the Greco-Roman featherweight division in 1924. Additionally, he secured world titles in the Greco-Roman featherweight in 1921 and 1922, showcasing his exceptional prowess in the sport. Anttila's remarkable achievements also extended to the national level, as he was the Finnish champion in Greco-Roman wrestling in 1918–20 and 1929, and in freestyle wrestling in 1924 and 1929. Born and raised in Finland, Anttila's family immigrated to Canada when he was just 4 years old, where he was brought up on a family farm, instilling in him the values of hard work and determination. His legacy continues to inspire and influence aspiring wrestlers to this day. Kalle Anttila's contributions to the sport will forever be remembered, and his impact remains profound in the world of wrestling.

Karl-Henrik Brink, born on 12 August 1975 in Helsingborg, Sweden, is a renowned Swedish professional golfer with an impressive career on the European Tour and the Challenge Tour. Brink's prowess in golf runs in the family, as his sister, Maria, is also a professional golfer who has competed on the Ladies European Tour. Notably, in 1993, Brink was part of the Swedish team that clinched the European Boys' Team Championship in Ascona, Switzerland. His professional journey commenced in 1994, and he has since garnered three wins on Europe's Challenge Tour, with his notable victories at the BTC Slovenian Open in 1997, Öhrlings Swedish Matchplay in 1999, and the Lexus Open in 2006. Brink's remarkable talent has earned him the opportunity to participate in events on the European Tour, with a standout full season in 1998 following his graduation from the Challenge Tour. His exceptional skills and unwavering dedication have solidified his status as a prominent figure in the world of golf.

Kalle Kustaa Tuulos (15 May 1930 — 4 March 2001) was a prominent Finnish figure skater, known for his remarkable achievements in single skating. Representing Tampereen Luistelijat of Tampere, Tuulos secured his position as an eight-time Finnish national champion, dominating the years 1949–1956. His exceptional talent led him to represent Finland in two Winter Olympics, where he showcased his skills and dedication. In the 1952 Oslo Olympics, he achieved a commendable 13th place, followed by a respectable 15th place finish in the 1956 Cortina d'Ampezzo Olympics. Notably, Kalle Kustaa Tuulos was the nephew of Vilho Tuulos, further emphasizing his family's legacy in the sport. His legacy and contributions continue to inspire aspiring figure skaters worldwide.

Kalle Eller, also known as Kalle Istvan Eller, was a prominent figure in Estonia, recognized as a publisher, neopagan, cultural researcher, educator, and poet. Born in Tartu, he pursued his education in Estonian and English philology at Tartu State University. Throughout his career, Eller held various roles, including that of a schoolteacher, lecturer at the Institute of Theology of the Estonian Evangelical Lutheran Church, and an Officer of the Defence League, where he even served as the Commander. He also worked as an Adviser to the National Defence Committee of the Riigikogu. Notably, he was awarded the rank of colonel in the Estonian Defence League by Heinrich Mark. Eller's contributions extended to literature, with his works being featured in almanacs and essays, and he was the author of several publications. Additionally, he was a co-founder of Maavalla Koda. Kalle Eller's impact on Estonian culture and his multifaceted career left a lasting legacy.

Kalle Jürgenson, born on 1 September 1960 in Tallinn, is a prominent Estonian astrophysicist and politician. With an extensive career, he has served as a member of the VII, VIII, and IX Riigikogu and held the esteemed position of Mayor of Elva from 1998 to 1999. Jürgenson's contributions to the field of astrophysics have garnered him widespread recognition, and his political endeavors have further solidified his impact on Estonian society. His dedication to both science and public service has earned him a reputation as a respected figure in his country. Jürgenson continues to inspire and influence others through his multifaceted contributions to the fields of science and politics.