| Country | Local name | 2026 | 2027 |
|---|---|---|---|
| Andorra | Dia de la Constitució | Sat 14 Mar | Sun 14 Mar |
| Anguilla | Fri 7 Aug | Fri 6 Aug | |
| Armenia | Սահմանադրության օր | Sun 5 Jul | Mon 5 Jul |
| Cambodia | ទិវាប្រកាសរដ្ឋធម្មនុញ្ញ | Thu 24 Sep | Fri 24 Sep |
| Cayman Islands | Mon 6 Jul | Mon 5 Jul | |
| Cook Islands | Tue 4 Aug | Wed 4 Aug | |
| Dominican Republic | Día de la Constitución | Mon 9 Nov | Sat 6 Nov |
| Equatorial Guinea | Día de la Constitución | Sat 15 Aug | Sun 15 Aug |
| Ghana | Wed 7 Jan | Thu 7 Jan | |
| Japan | 憲法記念日 | Sun 3 May | Mon 3 May |
| Kazakhstan | Қазақстан Республикасының Конституциясы күні | — | Mon 15 Mar |
| Kosovo | Dita e Kushtetutës së Republikës së Kosovës | Thu 9 Apr | Fri 9 Apr |
| Kyrgyzstan | Кыргыз Республикасынын Конституция күнү | Tue 5 May | Wed 5 May |
| Marshall Islands | Fri 1 May | Sat 1 May | |
| Mexico | Día de la Constitución | Mon 2 Feb | Mon 1 Feb |
| Nauru | Sun 17 May | Mon 17 May | |
| Nepal | संविधान दिवस | Sat 19 Sep | Sun 19 Sep |
| Niue | Mon 19 Oct | Tue 19 Oct | |
| Northern Mariana Islands | Tue 8 Dec | Wed 8 Dec | |
| Norway | Grunnlovsdag | Sun 17 May | Mon 17 May |
| Palau | Thu 9 Jul | Fri 9 Jul | |
| Seychelles | Thu 18 Jun | Fri 18 Jun | |
| Sint Maarten | Dag van de Constitutie | Mon 12 Oct | Mon 11 Oct |
| South Korea | 제헌절 | Fri 17 Jul | Sat 17 Jul |
| Spain | Día de la Constitución Española | — | Mon 6 Dec |
| Svalbard and Jan Mayen | Grunnlovsdag | Sun 17 May | Mon 17 May |
| Taiwan | 行憲紀念日 | Fri 25 Dec | Fri 24 Dec |
| Tajikistan | Рӯзи Конститутсияи Ҷумҳурии Тоҷикистон | Fri 6 Nov | Sat 6 Nov |
| Thailand | วันรัฐธรรมนูญ | Thu 10 Dec | Fri 10 Dec |
| Tonga | ʻAho Konisitutone (fakatokangaʻi) | Mon 2 Nov | Mon 8 Nov |
| Turks and Caicos Islands | Mon 31 Aug | Mon 30 Aug | |
| Uruguay | Jura de la Constitución | Sat 18 Jul | Sun 18 Jul |
| Uzbekistan | Oʻzbekiston Respublikasi Konstitutsiyasi kuni | Tue 8 Dec | Wed 8 Dec |
| Vanuatu | Mon 5 Oct | Tue 5 Oct |