| Date | ISO week | Holiday | Where |
| Tuesday 1 December 2026 | 2026-W49 | National Day | Central African Republic, Romania |
| | Freedom and Democracy Day | Chad |
| | Liberation Day | Albania |
| | Restoration of Independence Day | Portugal |
| Wednesday 2 December 2026 | 2026-W49 | Lao National Day | Laos |
| | National Day | United Arab Emirates |
| Thursday 3 December 2026 | 2026-W49 | National Day | United Arab Emirates |
| Friday 4 December 2026 | 2026-W49 | Farmers' Day | Ghana |
| | Gospel Day | Marshall Islands |
| | National Day | Myanmar |
| Saturday 5 December 2026 | 2026-W49 | HM King Bhumibol Adulyadej the Great's Birthday | Thailand |
| Sunday 6 December 2026 | 2026-W49 | Independence Day | Åland Islands, Finland |
| Monday 7 December 2026 | 2026-W50 | Anniversary of the Coronation of HM King George Tupou I | Tonga |
| | Bridge Public Holiday | Argentina |
| | HM King Bhumibol Adulyadej the Great's Birthday (in lieu) | Thailand |
| | Memorial Day | Timor-Leste |
| Tuesday 8 December 2026 | 2026-W50 | Immaculate Conception | Andorra, Argentina, Austria, Chile, Colombia, Equatorial Guinea, Italy, Liechtenstein, Monaco, Nicaragua, Peru, Philippines, Portugal, San Marino, Seychelles, Spain, Vatican City |
| | Constitution Day | Northern Mariana Islands, Uzbekistan |
| | Caacupe Virgin Day | Paraguay |
| | Day of Our Lady of Immaculate Conception and Timor-Leste Patroness | Timor-Leste |
| | Feast of the Immaculate Conception | Malta |
| | Lady of Camarin Day | Guam |
| | Liberation Day | Syria |
| | Mother's Day | Panama |
| | National Youth Day | Albania |
| | Saint Clement of Ohrid Day | North Macedonia |
| Wednesday 9 December 2026 | 2026-W50 | Battle of Ayacucho Day | Peru |
| | Human Rights and Peace Day | Kiribati |
| | Independence and Republic Day | Tanzania |
| | Sir Vere Cornwall Bird Snr. Day | Antigua & Barbuda |
| Thursday 10 December 2026 | 2026-W50 | Constitution Day | Thailand |
| Friday 11 December 2026 | 2026-W50 | Proclamation of Independence Day | Burkina Faso |
| | Republic Day | Madagascar |
| Saturday 12 December 2026 | 2026-W50 | International Neutrality Day | Turkmenistan |
| | Jamhuri Day | Kenya |
| Sunday 13 December 2026 | 2026-W50 | National Day | St Lucia |
| | Republic Day | Malta |
| Monday 14 December 2026 | 2026-W51 | National Day | St Lucia |
| Wednesday 16 December 2026 | 2026-W51 | Day of Reconciliation | South Africa |
| | Independence Day | Kazakhstan |
| | National Day | Bahrain |
| | Victory Day | Bangladesh |
| Thursday 17 December 2026 | 2026-W51 | National Day | Bahrain, Bhutan |
| Friday 18 December 2026 | 2026-W51 | National Day | Niger |
| | National Heroes and Heroines Day | Anguilla |
| | Qatar National Day | Qatar |
| Saturday 19 December 2026 | 2026-W51 | National Heroes and Heroines Day | Anguilla |
| Sunday 20 December 2026 | 2026-W51 | Abolition of Slavery | Réunion |
| | Macao S.A.R. Establishment Day | Macau |
| | National Mourning Day | Panama |
| Monday 21 December 2026 | 2026-W52 | National Mourning Day | Panama |
| | São Tomé Day | São Tomé & Príncipe |
| Tuesday 22 December 2026 | 2026-W52 | Unity Day | Zimbabwe |
| Wednesday 23 December 2026 | 2026-W52 | Birthday of Imam Ali | Iran |
| | Unduvap Full Moon Poya Day | Sri Lanka |
| Thursday 24 December 2026 | 2026-W52 | Christmas Eve | Åland Islands, Bulgaria, Czechia, Estonia, Faroe Islands, Finland, Latvia, Lithuania, Philippines, Poland, Slovakia, South Sudan, Vatican City, Venezuela |
| | Day off (substituted) | Hungary |
| | Independence Day | Libya |
| Friday 25 December 2026 | 2026-W52 | Christmas Day | Åland Islands, Albania, American Samoa, Andorra, Anguilla, Antigua & Barbuda, Argentina, Aruba, Australia, Austria, Bahamas, Bangladesh, Barbados, Belgium, Belize, Benin, Bermuda, Bolivia, Botswana, Brazil, British Virgin Islands, Brunei, Bulgaria, Burkina Faso, Burundi, Cameroon, Canada, Cape Verde, Caribbean Netherlands, Cayman Islands, Central African Republic, Chad, Chile, Christmas Island, Cocos Islands, Colombia, Comoros, Congo, Cook Islands, Costa Rica, Côte d'Ivoire, Croatia, Cuba, Curaçao, Cyprus, Czechia, Denmark, Djibouti, Dominica, Dominican Republic, DR Congo, Ecuador, El Salvador, Equatorial Guinea, Estonia, Eswatini, Falkland Islands, Faroe Islands, Fiji, Finland, France, French Guiana, French Polynesia, French Southern Territories, Gabon, Gambia, Germany, Ghana, Gibraltar, Greece, Greenland, Grenada, Guadeloupe, Guam, Guatemala, Guernsey, Guinea, Guinea-Bissau, Guyana, Haiti, Honduras, Hong Kong, Hungary, Iceland, Indonesia, Ireland, Isle of Man, Italy, Jamaica, Jersey, Jordan, Kenya, Kiribati, Latvia, Lebanon, Lesotho, Liberia, Liechtenstein, Lithuania, Luxembourg, Madagascar, Malawi, Malaysia, Mali, Malta, Marshall Islands, Martinique, Mauritius, Mayotte, Mexico, Micronesia, Monaco, Montserrat, Myanmar, Namibia, Nauru, Nepal, Netherlands, New Caledonia, New Zealand, Nicaragua, Niger, Nigeria, Niue, Norfolk Island, Northern Mariana Islands, Norway, Palau, Panama, Papua New Guinea, Paraguay, Peru, Philippines, Pitcairn, Poland, Portugal, Puerto Rico, Réunion, Romania, Rwanda, Samoa, San Marino, São Tomé & Príncipe, Senegal, Seychelles, Sierra Leone, Singapore, Sint Maarten, Slovakia, Slovenia, Solomon Islands, South Africa, South Georgia, South Korea, South Sudan, Spain, Sri Lanka, St Barthélemy, St Helena, St Kitts & Nevis, St Lucia, St Martin, St Pierre & Miquelon, St Vincent & Grenadines, Sudan, Suriname, Svalbard & Jan Mayen, Sweden, Switzerland, Syria, Tanzania, Timor-Leste, Togo, Tokelau, Tonga, Trinidad & Tobago, Turks & Caicos, Tuvalu, Uganda, United Kingdom, United States, US Minor Outlying Islands, US Virgin Islands, Vanuatu, Vatican City, Venezuela, Wallis & Futuna, Zambia, Zimbabwe |
| | Catholic Christmas Day | Belarus, Bosnia & Herzegovina, Palestine |
| | Family Day | Mozambique, Uruguay |
| | Christmas | India |
| | Christmas and Family Day | Angola |
| | Christmas Day (by new style) | Moldova |
| | Constitution Day | Taiwan |
| | Quaid-e-Azam Day | Pakistan |
| Saturday 26 December 2026 | 2026-W52 | Boxing Day | Anguilla, Antigua & Barbuda, Australia, Bahamas, Barbados, Belize, Bermuda, Botswana, British Virgin Islands, Cayman Islands, Christmas Island, Cocos Islands, Cook Islands, Dominica, Eswatini, Falkland Islands, Fiji, Gambia, Ghana, Gibraltar, Grenada, Guernsey, Isle of Man, Jamaica, Jersey, Kenya, Kiribati, Lesotho, Malawi, Montserrat, New Zealand, Nigeria, Niue, Norfolk Island, Papua New Guinea, Pitcairn, Rwanda, Samoa, Sierra Leone, South Georgia, St Helena, St Kitts & Nevis, St Lucia, St Vincent & Grenadines, Syria, Tanzania, Tokelau, Tonga, Trinidad & Tobago, Turks & Caicos, Tuvalu, Uganda, United Kingdom, Zimbabwe |
| | Second Day of Christmas | Åland Islands, Aruba, Caribbean Netherlands, Curaçao, Czechia, Denmark, Estonia, Faroe Islands, Finland, Germany, Greenland, Hungary, Iceland, Latvia, Lithuania, Netherlands, Norway, Poland, Sint Maarten, Slovakia, South Sudan, Suriname, Svalbard & Jan Mayen, Sweden |
| | Saint Stephen's Day | Andorra, Austria, Croatia, Ireland, Italy, Liechtenstein, Luxembourg, San Marino, Vatican City |
| | Christmas Day | Brunei, Bulgaria, Romania |
| | Day After Christmas | Cyprus, Guyana |
| | Family Day | Namibia, Vanuatu |
| | Christmas Second Day | US Virgin Islands |
| | Day following Christmas | Nauru |
| | Day of Goodwill | South Africa |
| | Glorifying Mother of God | Greece |
| | Independence and Unity Day | Slovenia |
| | National Day of Thanksgiving | Solomon Islands |
| | The first weekday after Christmas Day | Hong Kong |
| Sunday 27 December 2026 | 2026-W52 | Christmas Holiday | Falkland Islands |
| | Saint John the Evangelist's Day | Vatican City |
| | Socialist Constitution Day | North Korea |
| Monday 28 December 2026 | 2026-W53 | Boxing Day | Anguilla, Antigua & Barbuda, Bahamas, Bermuda, British Virgin Islands, Cayman Islands, Christmas Island, Cocos Islands, Cook Islands, Falkland Islands, Fiji, Gambia, Gibraltar, Isle of Man, Kiribati, Malawi, Montserrat, New Zealand, Nigeria, Niue, Norfolk Island, Rwanda, Sierra Leone, South Georgia, St Helena, Turks & Caicos, Tuvalu, United Kingdom |
| | Boxing Day (substitute day) | Guernsey, Jersey |
| | Boxing Day Holiday | Botswana |
| | Christmas Day | Bulgaria |
| | Day After Christmas | Guyana |
| | Day following Christmas | Nauru |
| | National Day of Thanksgiving | Solomon Islands |
| Tuesday 29 December 2026 | 2026-W53 | Christmas Holiday | Falkland Islands |
| | National Day of Prayer and Christian Heritage | Zambia |
| | National Freedom and Independence Day | Mongolia |
| | Peace Day in Cambodia | Cambodia |
| Wednesday 30 December 2026 | 2026-W53 | Rizal Day | Philippines |
| | Tamu Lhochhar | Nepal |
| Thursday 31 December 2026 | 2026-W53 | New Year's Eve | Armenia, Cuba, Faroe Islands, Latvia, Philippines, Thailand, Venezuela |
| | Day off (substituted) | Russia, Uzbekistan |
| | Festival Day | Montserrat |
| | International Azerbaijanis Solidarity Day | Azerbaijan |
| | Last Day of the Year | Vatican City |
| | National Heroes Day | Timor-Leste |