| Date | ISO week | Holiday | Where |
|---|
| Wednesday 1 December 2027 | 2027-W48 | National Day | Central African Republic, Romania |
| | Freedom and Democracy Day | Chad |
| | Restoration of Independence Day | Portugal |
| Thursday 2 December 2027 | 2027-W48 | Lao National Day | Laos |
| | National Day | United Arab Emirates |
| Friday 3 December 2027 | 2027-W48 | Farmers' Day | Ghana |
| | Gospel Day | Marshall Islands |
| | National Day | United Arab Emirates |
| Sunday 5 December 2027 | 2027-W48 | HM King Bhumibol Adulyadej the Great's Birthday | Thailand |
| Monday 6 December 2027 | 2027-W49 | Independence Day | Åland Islands, Finland |
| | Anniversary of the Coronation of HM King George Tupou I | Tonga |
| | Constitution Day | Spain |
| | HM King Bhumibol Adulyadej the Great's Birthday (in lieu) | Thailand |
| Tuesday 7 December 2027 | 2027-W49 | Memorial Day | Timor-Leste |
| Wednesday 8 December 2027 | 2027-W49 | 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 |
| Thursday 9 December 2027 | 2027-W49 | Battle of Ayacucho Day | Peru |
| | Human Rights and Peace Day | Kiribati |
| | Independence and Republic Day | Tanzania |
| | Sir Vere Cornwall Bird Snr. Day | Antigua & Barbuda |
| Friday 10 December 2027 | 2027-W49 | Constitution Day | Thailand |
| Saturday 11 December 2027 | 2027-W49 | Proclamation of Independence Day | Burkina Faso |
| | Republic Day | Madagascar |
| Sunday 12 December 2027 | 2027-W49 | Birthday of Imam Ali | Iran |
| | International Neutrality Day | Turkmenistan |
| | Jamhuri Day | Kenya |
| Monday 13 December 2027 | 2027-W50 | International Neutrality Day | Turkmenistan |
| | Jamhuri Day | Kenya |
| | National Day | St Lucia |
| | Republic Day | Malta |
| Thursday 16 December 2027 | 2027-W50 | Day of Reconciliation | South Africa |
| | Independence Day | Kazakhstan |
| | National Day | Bahrain |
| | Victory Day | Bangladesh |
| Friday 17 December 2027 | 2027-W50 | National Day | Bahrain, Bhutan |
| | National Heroes and Heroines Day | Anguilla |
| Saturday 18 December 2027 | 2027-W50 | National Day | Niger |
| | Qatar National Day | Qatar |
| Sunday 19 December 2027 | 2027-W50 | National Heroes and Heroines Day | Anguilla |
| Monday 20 December 2027 | 2027-W51 | Abolition of Slavery | Réunion |
| | Macao S.A.R. Establishment Day | Macau |
| | National Mourning Day | Panama |
| Tuesday 21 December 2027 | 2027-W51 | São Tomé Day | São Tomé & Príncipe |
| Wednesday 22 December 2027 | 2027-W51 | Unity Day | Zimbabwe |
| Friday 24 December 2027 | 2027-W51 | Christmas Eve | Åland Islands, Bulgaria, Czechia, Estonia, Faroe Islands, Finland, Latvia, Lithuania, Philippines, Poland, Slovakia, South Sudan, Vatican City, Venezuela |
| | Christmas Day | American Samoa, Ecuador, Guam, Micronesia, Northern Mariana Islands, Palau, Puerto Rico, São Tomé & Príncipe, United States, US Minor Outlying Islands, US Virgin Islands |
| | Christmas Day Holiday | Marshall Islands |
| | Constitution Day | Taiwan |
| | Independence Day | Libya |
| Saturday 25 December 2027 | 2027-W51 | 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, Congo, Cook Islands, Costa Rica, Côte d'Ivoire, Croatia, Cuba, Curaçao, Cyprus, Czechia, Denmark, 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, 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, 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 |
| | Isra' and Mi'raj | Comoros, Djibouti, Jordan, Kuwait, Oman, Palestine, Somalia |
| | Catholic Christmas Day | Belarus, Bosnia & Herzegovina |
| | 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 |
| Sunday 26 December 2027 | 2027-W51 | Boxing Day | Anguilla, Antigua & Barbuda, Australia, Bahamas, Barbados, 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 |
| | Isra' and Mi'raj | Brunei, Indonesia, Iran |
| | Christmas Day | 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 |
| Monday 27 December 2027 | 2027-W52 | Christmas Day | Albania, Anguilla, Antigua & Barbuda, Bermuda, British Virgin Islands, Bulgaria, Canada, Cayman Islands, Christmas Island, Cocos Islands, Cook Islands, Equatorial Guinea, Fiji, Gibraltar, Guyana, Isle of Man, Kiribati, Malawi, Montserrat, Nauru, New Zealand, Nigeria, Niue, Norfolk Island, Rwanda, Sierra Leone, Solomon Islands, South Georgia, St Helena, Turks & Caicos, Tuvalu, United Kingdom |
| | Boxing Day | Bahamas, Barbados, Belize, Botswana, Dominica, Eswatini, Gambia, Grenada, Jamaica, Kenya, Papua New Guinea, St Kitts & Nevis, St Lucia, St Vincent & Grenadines, Trinidad & Tobago, Zimbabwe |
| | Christmas Day (substitute day) | Guernsey, Jersey |
| | Family Day | Namibia, Vanuatu |
| | Alternative holiday for Christmas Day | South Korea |
| | Christmas Holiday | Falkland Islands |
| | Day of Goodwill | South Africa |
| | Isra' and Mi'raj | Brunei |
| | Saint John the Evangelist's Day | Vatican City |
| | Socialist Constitution Day | North Korea |
| | The first weekday after Christmas Day | Hong Kong |
| Tuesday 28 December 2027 | 2027-W52 | Boxing Day | Anguilla, Antigua & Barbuda, Bermuda, British Virgin Islands, Cayman Islands, Christmas Island, Cocos Islands, Cook Islands, Fiji, Gibraltar, Isle of Man, Kiribati, Malawi, Montserrat, New Zealand, Nigeria, Niue, Norfolk Island, Sierra Leone, South Georgia, St Helena, Turks & Caicos, Tuvalu, United Kingdom |
| | Boxing Day (substitute day) | Guernsey, Jersey |
| | Christmas Day | Bulgaria, Falkland Islands |
| | Day After Christmas | Guyana |
| | Day following Christmas | Nauru |
| | Karen New Year | Myanmar |
| | National Day of Thanksgiving | Solomon Islands |
| Wednesday 29 December 2027 | 2027-W52 | Boxing Day | Falkland Islands |
| | National Day of Prayer and Christian Heritage | Zambia |
| | National Freedom and Independence Day | Mongolia |
| | Peace Day in Cambodia | Cambodia |
| Thursday 30 December 2027 | 2027-W52 | Rizal Day | Philippines |
| | Tamu Lhochhar | Nepal |
| Friday 31 December 2027 | 2027-W52 | New Year's Day | American Samoa, Ecuador, Guam, Micronesia, Northern Mariana Islands, Palau, Puerto Rico, São Tomé & Príncipe, Solomon Islands, United States, US Minor Outlying Islands, US Virgin Islands |
| | New Year's Eve | Armenia, Cuba, Faroe Islands, Latvia, Philippines, Thailand, Venezuela |
| | Day off (substituted) | Russia |
| | Festival Day | Montserrat |
| | Founding Day of the Republic of China | Taiwan |
| | International Azerbaijanis Solidarity Day | Azerbaijan |
| | Last Day of the Year | Vatican City |
| | National Heroes Day | Timor-Leste |
| | New Year's Day Holiday | Marshall Islands |