| New York | 1 | New York | Zohran Mamdani | Democratic Party (Democratic Socialists of America) | United States | 2026 |
| London | 2 | London | Sadiq Khan | Labour Party | United Kingdom | 2016 |
| Paris | 3 | Paris | Emmanuel Grégoire | Socialist Party | France | 2026 |
| Tokyo | 4 | Tokyo | Yuriko Koike | Liberal Democratic Party | Japan | 2016 |
| San Francisco-San Jose | 5 | San Francisco | Daniel Lurie | Democratic Party | United States | 2025 |
| Beijing | 6 | Beijing | Yin YongYin Li (Party Secretary) | Chinese Communist Party | China | 2023 |
| Shanghai | 7 | Shanghai | Zhu ZhongmingChen Jining (Party Secretary) | Chinese Communist Party | China | 2026 |
| Seoul | 8 | Seoul | Oh Se-hoon | People Power Party | South Korea | 2021 |
| Los Angeles | 9 | Los Angeles | Karen Bass | Democratic Party | United States | 2022 |
| Guangzhou | 10 | Guangzhou | Sun ZhiyangFeng Zhonghua (Party Secretary) | Chinese Communist Party | China | 2024 |
| Washington-Baltimore | 11 | Washington | Muriel Bowser | Democratic Party | United States | 2015 |
| Chicago | 12 | Chicago | Brandon Johnson | Democratic Party | United States | 2023 |
| Boston | 13 | Boston | Michelle Wu | Democratic Party | United States | 2021 |
| Osaka-Kyoto-Kobe | 14 | Osaka | Hirofumi Yoshimura | Japan Innovation Party (Ishin) | Japan | 2019 |
| Moscow | 15 | Moscow | Sergey Sobyanin | United Russia | Russia | 2010 |
| Toronto | 16 | Toronto | Olivia Chow | New Democratic Party | Canada | 2023 |
| Sydney | 17 | Sydney | Clover Moore | Independent (Clover Moore Independent Team) | Australia | 2004 |
| Hong Kong | 18 | Hong Kong | John Lee Ka-chiu | Nonpartisan | Hong Kong | 2022 |
| Madrid | 19 | Madrid | José Luis Martínez-Almeida | People's Party | Spain | 2019 |
| Houston | 20 | Houston | John Whitmire | Democratic Party | United States | 2024 |
| Milan | 21 | Milan | Giuseppe Sala | Independent | Italy | 2016 |
| Istanbul | 22 | Istanbul | Nuri Aslan | CHP (Republican People's Party) | Turkey | 2025 |
| Singapore | 23 | Singapore | Lawrence Wong | People's Action Party | Singapore | 2024 |
| Sao Paulo | 24 | Sao Paulo | Ricardo Nunes | MDB (Brazilian Democratic Movement) | Brazil | 2021 |
| Mexico City | 25 | Mexico City | Clara Brugada | Party of the Democratic Revolution | Mexico | 2024 |
| Rhine-Ruhr | 26 | Cologne | Torsten Burmester | Social Democratic Party of Germany | Germany | 2025 |
| Melbourne | 27 | Melbourne | Nicholas Reece | Independent (Labor-aligned) | Australia | 2024 |
| Miami | 28 | Miami | Eileen Higgins | — | United States | 2025 |
| Philadelphia | 29 | Philadelphia | Cherelle Parker | Democratic Party | United States | 2024 |
| Berlin | 30 | Berlin | Kai Wegner | Christian Democratic Union | Germany | 2023 |
| Seattle | 31 | Seattle | Katie Wilson | Democratic Party (Democratic Socialist) | United States | 2026 |
| Dubai-Sharjah | 32 | Dubai | Mohammed bin Rashid Al Maktoum | N/A | United Arab Emirates | 2006 |
| Barcelona | 33 | Barcelona | Jaume Collboni Cuadrado | Socialists' Party of Catalonia | Spain | 2023 |
| Dallas | 34 | Dallas | Eric Johnson | Democratic Party | United States | 2019 |
| Mumbai | 35 | Mumbai | Ritu Tawde | Bharatiya Janata Party | India | 2026 |
| Bangkok | 36 | Bangkok | Chadchart Sittipunt | People's Party (Thailand, 2024) | Thailand | 2022 |
| Atlanta | 37 | Atlanta | Andre Dickens | Democratic Party | United States | 2021 |
| Nanjing | 38 | Nanjing | Li ZhongjunZhou Hongbo (Party Secretary) | Chinese Communist Party | China | — |
| Brussels | 39 | Brussels | Philippe Close | Socialist Party | Belgium | 2017 |
| Buenos Aires | 40 | Buenos Aires | Jorge Macri | Republican Proposal | Argentina | 2023 |
| Kuala Lumpur | 41 | Kuala Lumpur | Fadlun Mak Ujud | Appointed | Malaysia | 2025 |
| Amsterdam | 42 | Amsterdam | Femke Halsema | GroenLinks | Netherlands | 2018 |
| Munich | 43 | Munich | Dominik Krause | Alliance '90/The Greens | Germany | 2026 |
| Manila | 44 | Manila | Isko Moreno | Aksyon Demokratiko | Philippines | 2025 |
| Rome | 45 | Rome | Roberto Gualtieri | Democratic Party | Italy | 2021 |
| Jakarta | 46 | Jakarta | Pramono Anung | Indonesian Democratic Party – Struggle | Indonesia | 2025 |
| Chengdu | 47 | Chengdu | Chen ShupingCao Lijun (Party Secretary) | Chinese Communist Party | China | 2025 |
| Delhi | 48 | Delhi | Pravesh Wahi | — | India | 2026 |
| Vienna | 49 | Vienna | Michael Ludwig | SPO (Social Democratic Party of Austria) | Austria | 2018 |
| Frankfurt | 50 | Frankfurt | Mike Josef | Social Democratic Party of Germany | Germany | 2023 |
| Cairo | 51 | Cairo | Ibrahim Saber | Appointed | Egypt | 2024 |
| Johannesburg | 52 | Johannesburg | Dada Morero | ANC (African National Congress) | South Africa | 2024 |
| Stockholm | 53 | Stockholm | Karin Wanngard | Social Democrats (SAP) | Sweden | 2022 |
| San Diego | 54 | San Diego | Todd Gloria | Democratic Party | United States | 2020 |
| Wuhan | 55 | Wuhan | Cheng YongwenSheng Yuechun (Party Secretary) | Chinese Communist Party | China | 2021 |
| Montreal | 56 | Montreal | Soraya Martinez Ferrada | Liberal Party of Canada | Canada | 2025 |
| Lisbon | 57 | Lisbon | Carlos Moedas | Social Democratic Party | Portugal | — |
| Hangzhou | 58 | Hangzhou | Du XuliangLiu Fei (Party Secretary) | Chinese Communist Party | China | 2025 |
| Taipei | 59 | Taipei | Chiang Wan-an | Kuomintang | Taiwan | 2022 |
| Vancouver | 60 | Vancouver | Ken Sim | Non-Partisan Association | Canada | 2022 |
| Denver | 61 | Denver | Michael Johnston | Democratic Party | United States | 2023 |
| Detroit | 62 | Detroit | Mary Sheffield | Democratic Party | United States | 2026 |
| Las Vegas | 63 | Las Vegas | Shelley Berkley | Democratic Party | United States | 2024 |
| Rio de Janeiro | 64 | Rio de Janeiro | Eduardo Paes | Democratic Movement Party | Brazil | 2021 |
| Minneapolis | 65 | Minneapolis | Jacob Frey | Democratic Party (DFL) | United States | 2018 |
| Doha | 66 | Doha | Abdullah bin Hamad bin Abdullah Al Attiyah | N/A | Qatar | 2024 |
| Riyadh | 67 | Riyadh | Faisal bin Abdulaziz bin Ayyaf Al Muqrin | Appointed | Saudi Arabia | 2019 |
| Chongqing | 68 | Chongqing | Chen XinwuYuan Jiajun (Party Secretary) | Chinese Communist Party | China | 2026 |
| Abu Dhabi | 69 | Abu Dhabi | Mohammed Bin Zayed Al Nahyan | N/A | United Arab Emirates | 2022 |
| St. Louis | 70 | St. Louis | Tishaura Jones | Democratic Party | United States | 2021 |
| Austin | 71 | Austin | Kirk Watson | Democratic Party | United States | 2023 |
| Changsha | 72 | Changsha | Chen BozhangChen Jing (Party Secretary) | Chinese Communist Party | China | — |
| Xi'an | 73 | Xi'an | Ye NiupingHao Huijie (Party Secretary) | Chinese Communist Party | China | 2023 |
| Tianjin | 74 | Tianjin | Zhang GongChen Min'er (Party Secretary) | Chinese Communist Party | China | 2022 |
| Busan-Ulsan | 75 | Busan | Chun Jae-soo | Democratic Party | South Korea | 2026 |
| Phoenix | 76 | Phoenix | Kate Gallego | Democratic Party | United States | 2019 |
| Manchester | 77 | Manchester | Bev Craig | Labour Party | United Kingdom | 2026 |
| Nagoya | 78 | Nagoya | Ichirō Hirosawa | Genzei Nippon | Japan | 2024 |
| Qingdao | 79 | Qingdao | Ren GangZeng Zanrong (Party Secretary) | Chinese Communist Party | China | 2025 |
| Tel-Aviv | 80 | Tel-Aviv | Ron Huldai | Tel Aviv 1 (local list; Labor-aligned) | Israel | 1998 |
| Rotterdam-The Hague | 81 | Rotterdam | Carola Schouten | Christian Union | Netherlands | 2024 |
| Pittsburgh | 82 | Pittsburgh | Corey O'Connor | Democratic Party | United States | 2026 |
| Copenhagen | 83 | Copenhagen | Sisse Marie Welling | Green Left (Socialist People's Party) | Denmark | 2026 |
| Portland | 84 | Portland | Keith Wilson | Democratic Party | United States | 2025 |
| Athens | 85 | Athens | Haris Doukas | PASOK (Movement for Change) | Greece | 2024 |
| New Orleans | 86 | New Orleans | Helena Moreno | Democratic Party | United States | 2026 |
| Zurich | 87 | Zurich | Corine Mauch | Social Democratic Party of Switzerland | Switzerland | 2009 |
| Brisbane | 88 | Brisbane | Adrian Schrinner | Liberal National Party (LNP) | Australia | 2019 |
| Dublin | 89 | Dublin | Daryl Barron | — | Ireland | 2026 |
| Cleveland | 90 | Cleveland | Justin Bibb | Democratic Party | United States | 2022 |
| Warsaw | 91 | Warsaw | Rafał Trzaskowski | Civic Platform | Poland | 2018 |
| Tampa | 92 | Tampa | Jane Castor | Democratic Party | United States | 2019 |
| Raleigh-Durham | 93 | Raleigh | Janet Cowell | Democratic Party | United States | 2024 |
| Charlotte | 94 | Charlotte | Rob Harrington | — | United States | 2026 |
| Edinburgh | 95 | Edinburgh | Frank Ross | Scottish National Party | United Kingdom | 2017 |
| Calcutta | 96 | Kolkata | Firhad Hakim | AITC/TMC | India | 2018 |
| Santiago | 97 | Santiago | Mario Desbordes | RN (National Renewal) | Chile | 2024 |
| Salt Lake City-Provo | 99 | Salt Lake City | Erin Mendenhall | Democratic Party | United States | 2020 |
| Stuttgart | 100 | Stuttgart | Frank Nopper | Christian Democratic Union | Germany | 2022 |