Religious Holidays |
| 01/05/2023 | Tucindan | Serbia, Montenegro |
| 01/07/2023 | Christmas in Eastern Christianity | Belarus, Bosnia Herzegovina, Georgia, Kazakhstan, Kyrgyzstan, Macedonia, Moldova, Montenegro, Russia, Serbia, Sudan, State of Palestine, Ukraine |
| 02/14/2023 | Feast of Saint Tryphon in Bulgaria and Montenegro | Bulgaria, Montenegro |
| 04/07/2023 | Good Friday in Western Christianity | Eland, American Samoa, Andorra, Anguilla, Angola, Antigua and Barbuda, Argentina, Aruba, Australia, Austria, Bahamas, Barbados, Belize, Bermuda, Bolivia, Bonaire, St Eustatius and Saba, Botswana, Brazil, Gambia, Germany, Ghana, Gibraltar, Grenada, Greenland, Guatemala, Guadeloupe, Equatorial Guinea, Guyana, Haiti, Hong Kong, Honduras, East Timor, Denmark, Dominican Republic, Dominica, Indonesia, India, Iceland, Ireland, Spain, Jersey, Kenya, Kiribati, Cameroon, Canada, Cape Verde, Cayman Islands, Colombia, Costa Rica, Cuba, Curacao, Latvia, Lesotho, Liechtenstein, Luxembourg, Lebanon, Malawi, Macau, Malaysia, Malta, Marshall Islands, Mexico, Micronesia, Martinique, Montserrat, Namibia, Nauru, Netherlands, New Zealand, Nicaragua, Niue, Nigeria, Norway, Cocos Islands, Christmas Island, Cook Islands, Falkland Islands, Faeroe Islands, Isle of Man, Norfolk Island, Northern Mariana Islands, Pitcairn Islands, Papua New Guinea, Paraguay, Panama, Peru, Portugal, Puerto Rico, Rwanda, Montenegro, Jamaica, South Africa, South Sudan, United Kingdom, Ecuador, Estonia, Uganda, France, French Polynesia, Finland, Fiji, Sweden, Switzerland, Sri Lanka, Chile, Philippines, Saint Barthelemy, El Salvador, Saint Helena, Saint Kitts and Nevis, Saint Lucia, Saint Martin, Saint Vincent and the Grenadines, Samoa, Sao Tome and Principe, Seychelles, Sierra Leone, Singapore, Sint Maarten, Slovakia, Suriname, Sudan, Solomon Islands, Swaziland, Tanzania, Tokelau, Tonga, Trinidad and Tobago, Turks and Caicos Islands, Tuvalu, Uruguay, Venezuela, Vanuatu, British Virgin Island, Zambia, Zimbabwe, Guernsey |
| 04/14/2023 | Good Friday in Eastern Christianity | Bosnia Herzegovina, Bulgaria, Cyprus, Georgia, Greece, Lebanon, Romania, Montenegro, Serbia, Sudan, Eritrea, Ethiopia |
| 04/16/2023 | Easter in Eastern Christianity | Belarus, Ukraine, Russia, Serbia, Moldova, Bosnia Herzegovina, Macedonia, Montenegro, Georgia, Greece, Cyprus, Albania, Romania, Syria, Lebanon, Bulgaria |
| 04/17/2023 | Easter Monday in Eastern Christianity | Bulgaria, Bosnia Herzegovina, Cyprus, Georgia, Greece, Lebanon, Macedonia, Moldova, Romania, Montenegro, Ukraine, Serbia |
| 06/04/2023 | Pentecost in Eastern Christianity | Belarus, Ukraine, Russia, Serbia, Moldova, Bosnia Herzegovina, Macedonia, Montenegro, Georgia, Greece, Cyprus |
Unofficial Holidays |
| 01/14/2023 | Old New Year | Armenia, Azerbaijan, Belarus, Georgia, Moldova, Kazakhstan, Russia, Ukraine, Uzbekistan, Serbia, Macedonia, Montenegro, Bosnia Herzegovina, Croatia |
Public Holidays |
| 05/01/2023 | May Day | Eland, Belgium, Estonia, Finland, Gibraltar, Iceland, Norway, Svalbard and Jan Mayen, Sweden, Bangladesh, Cyprus, Czech Republic, Eritrea, Gambia, Ghana, Greece, India, Libya, Luxembourg, Montenegro, Poland, Serbia, Slovakia, Slovenia, Sri Lanka |
| 05/21/2023 | Independence Day in Montenegro | Montenegro |
| 07/13/2023 | Statehood Day in Montenegro | Montenegro |
Cultural Observances |
| 05/05/2023 | Europe Day in the Council of Europe | Austria, Azerbaijan, Albania, Andorra, Armenia, Belgium, Bulgaria, Bosnia Herzegovina, United Kingdom, Hungary, Germany, Greece, Georgia, Denmark, Ireland, Iceland, Spain, Italy, Cyprus, Latvia, Lithuania, Liechtenstein, Luxembourg, Macedonia, Malta, Moldova, Monaco, Netherlands, Norway, Poland, Portugal, Russia, Romania, San Marino, Serbia, Slovakia, Slovenia, Turkey, Ukraine, Finland, France, Croatia, Montenegro, Czech Republic, Switzerland, Sweden, Estonia |
| 06/25/2023 | Day of Friendship and Unity of the Slavs | Russia, Ukraine, Poland, Czech Republic, Belarus, Bulgaria, Bosnia Herzegovina, Macedonia, Serbia, Slovakia, Slovenia, Montenegro, Croatia |
International Observances |
| 06/01/2023 | International Day for Protection of Children | Albania, Angola, Armenia, Azerbaijan, Belarus, Benin, Bulgaria, Bosnia Herzegovina, China, Cambodia, Czech Republic, East Timor, Ecuador, Estonia, Eritrea, Ethiopia, Georgia, Guinea-Bissau, Kazakhstan, Cape Verde, Kyrgyzstan, Laos, Latvia, Lebanon, Lithuania, Macedonia, Macau, Moldova, Mongolia, Montenegro, Mozambique, Myanmar, Nicaragua, Poland, Portugal, Romania, Russia, Sao Tome and Principe, Serbia, Slovakia, Slovenia, Tajikistan, Tanzania, Turkmenistan, Ukraine, Uzbekistan, Vietnam, Yemen |
Anniversaries and Memorial Days |
| 06/03/2023 | Independence Declaration Day in Montenegro | Montenegro |
| 08/28/2023 | Kingdom Proclamation Day in Montenegro | Montenegro |
Professional Days |
| 10/07/2023 | Armed Forces Day in Montenegro | Montenegro |
