Sisse Marie Welling

Sisse Marie Welling
Welling in 2017
Lord Mayor of Copenhagen
Assumed office
1 January 2026
Preceded byLars Weiss
Personal details
Born (1986-02-25) 25 February 1986
Aarhus, Denmark
PartyGreen Left

Sisse Marie Welling (born 25 February 1986) is a Danish politician of the Green Left. Welling took office as Lord Mayor of Copenhagen on 1 January 2026,[1] the first non-Social Democrat to serve in the role.[2] She was previously city alderman for health and care from 2018 to 2025.[3]

Early life and ducation

Welling was born in February 1986[4] and grew up in Aarhus, Denmark. She attended secondary school at Aarhus Statsgymnasium. She studied history at the University of Copenhagen[4] and completed her master’s degree in 2017.

Career

Welling was first elected to Copenhagen's city council in 2009[5] when she was 23.[6] She served as city councillor or alderman (borgmester) responsible for health and older people or health and care from 2018 to 2025.[7][3][6]

In 2026, she became the Lord Mayor (overborgmester) of Copenhagen representing the Socialist People’s Party.[7] Her win was the first time a member of the Social Democrats wasn't Lord Mayor of Copenhagen in more 100 years.[8][2]

Personal life

She lives on Amager with her husband, and their two children.[9]

References

  1. ↑ "Københavns nye overborgmester er en ung politisk veteran" [Copenhagen's new mayor is a young political veteran]. Erhverv+ (in Danish). 19 November 2025.
  2. 1 2 Miranda Bryant (19 November 2025). "Social Democrats in Denmark suffer sweeping election losses". The Guardian. Retrieved 10 December 2025.
  3. 1 2 ""Man skal ikke kunne lukke munden på mig"" [You shouldn't be able to shut me up]. Dagbladet Information (in Danish). 14 March 2025.
  4. 1 2 "Sisse Marie Welling". Politiken. Copenhagen. 4 October 2025 – via Pressreader. 39 år, fylder 40 til februar. Gift med Bo, to børn. Drømte som lille om at blive brandmand. Overvejede siden at blive pædagog. Endte med at læse historie på Københavns Universitet. [39 years old, will turn 40 in February. Married to Bo, two children. Dreamed of becoming a firefighter as a child. Later considered becoming a teacher. Ended up studying history at the University of Copenhagen.]
  5. ↑ Nathan, Ida (20 November 2025). "Socialdemokratiet wanted her to be "the campaign's biggest scandal", yet Sisse Marie Welling made history in Copenhagen". Politiken - Den levende avis. Retrieved 15 May 2026.
  6. 1 2 "»My children are fortunately too young to understand it«: Sisse Marie Welling kicks off her day by grabbing her personal alarm". Politiken - Den levende avis. 4 September 2025. Retrieved 18 May 2026.
  7. 1 2 Fender, Tristan (23 October 2025). "Meet the Mayors: Sisse Marie Welling (Socialistisk Folkeparti) Local elections special". The Copenhagen Post. Retrieved 15 May 2026.
  8. ↑ Menini, Bernardo Basilici (19 November 2025). "Sisse Marie Welling (SF) will be the new Mayor of Copenhagen. Social Democrats lose the capital after over 100 years". The Copenhagen Post. Retrieved 15 May 2026.
  9. ↑ "Candidate for Copenhagen: Sisse Marie Welling". Socialistisk Folkeparti (in Danish). Retrieved 15 February 2026.