Last modified: 30 December 2022
Births and christenings in reigning and non-reigning royal houses of the year 2021.
* = new
Births
| Date | Name | Parents | Place |
| January 11 | Maximilian | Prince Heinrich and Princess Henriette of Bavaria | München, Germany |
| * January 15 | Cecilia Maria Josephine Adélaïde Henriette | Archduke Imre and Archduchess Kathleen of Austria | |
| January 18 | Bagrat | Prince Juan and Princess Kristine Bagration (Georgia) | |
| January 18 | Ghand (female) | Sheikh Jassim bin Hamad Al Thani and Sheikha Butheina of Qatar | |
| January 20 | Beatrice Carolina Luise Danielle Odile Maria | Fürst Anselm and Fürstin Clara von Urach | Düsseldorf, Germany |
| * January 21 | Arthur Philip Erik Marie | Joseph and Anna Louise de Bourbon de Parme | Copenhagen, Denmark |
| February | Alexis (male) | Prince Konstantin and Princess Deniz of Bavaria | |
| February 9 (8.55am) | August Philip Hawke | Jack Brooksbank and Princess Eugenie of York (UK) | Portland Hospital, London, UK |
| February 25 (5.41pm) | Salote Mafile’o Pilolevu | Crown Prince Tupouto’a ‘Ulukalala and Crown Princess Sinaitakala of Tonga | Calvary Hospital, Canberra, Australia |
| February | Hilda | Prince Berthold and Princess Nina von Baden | |
| February | Flora Leonor Máxima | Count Gundaccar and Countess Viktoria von Wurmbrand-Stuppach | |
| March 16 | Atticus Friedrich | Count Christoph and Countess Michelle von und zu Trauttmansdorff-Weinsberg | Markham, Ontario, Canada |
| March 21 | Lucas Philip | Michael and Zara Tindall (UK) | |
| March 26 | Julian Herbert Folke, Duke of Halland | Prince Carl Philip and Princess Sofia of Sweden | Danderyd Hospital, Stockholm, Sweden |
| April 17 | Abdul Aziz | Crown Prince Mohammed bin Salman Al Saud of Saudi Arabia and his wife Princess Sarah bint Manshour | |
| April 21 | Tunku Zahrah Zarith Aziyah binti Tunku Ismail | The Crown Prince and Crown Princess of Johor | Sultanah Aminah Hospital in Johor Bahru, Johor, Malaysia |
| May 17 | Suhail | Sheikh Mohammed bin Maktoum Al Maktoum of Dubai and Amal Salem | |
| May 17 | Hind | Sheikh Mohammed bin Maktoum Al Maktoum of Dubai and Amal Salem | |
| May 20 | Rashid | Sheikh Hamdan bin Mohammed Al Maktoum, Crown Prince of Dubai, and Sheikha Sheikha bint Saeed | |
| May 20 | Sheikha | Sheikh Hamdan bin Mohammed Al Maktoum, Crown Prince of Dubai, and Sheikha Sheikha bint Saeed | |
| May | Almaz June | Prince David and Princess Carrie Makonnen (Ethiopia) | |
| June 4 (11.40am) | Lilibet Diana Mountbatten-Windsor | The Duke and The Duchess of Sussex (UK) | Santa Barbara Cottage Hospital, Santa Barbara, CA, USA |
| July 2 | Nasser | Sheikh Khaled bin Hamad of Bahrain and his wife Sheikha Hessa bint Mohammed bin Isa Al Khalifa | |
| July 2 | Isa | Sheikh Khaled bin Hamad of Bahrain and his wife Sheikha Hessa bint Mohammed bin Isa Al Khalifa | |
| July 2 | Salman | Sheikh Khaled bin Hamad of Bahrain and his wife Sheikha Hessa bint Mohammed bin Isa Al Khalifa | |
| * July 3 | Anastasia Erika Alexandra Marie Yolande | Prince Henri and Princess Gabriella de Bourbon de Parme | Genève, Switzerland |
| July 26 | Eleanora Dina Daniela Alexandra | Hereditary Prince Ernst August and Hereditary Princess Ekaterina of Hannover | Henriettenstift, Hannover-Kirchrode, Germany |
| * July | Manuel Carlos | Manuel Afonso de Orleans-Bragança Haffner and Cassia Leticia Ferreira Kerpel | |
| August 16 | Feodora | Hereditary Prince Ferdinand and Hereditary Princess Viktoria Luise zu Leiningen | Frankfurt am Main, Germany |
| August 21 | Caspian Friedrich Joachim Albrecht | Prince Joachim Albrecht and Princess Angelina of Prussia | Berlin, Germany |
| August 25 | Hamdan | Sheikh Khaled bin Mohammad bin Hamdan Al Nahyan of Abu Dhabi and Sheikha Maryam bint Mohammed bin Rashid Al Maktoum of Dubai | UK |
| * September 4 | Raphaël Léopold Pedro François Marie | Prince François d’Orléans, Count of Dreux (France) and his wife Theresa | |
| September 18 (11.42pm) | Sienna Elizabeth | Edoardo Mapelli Mozzi and Princess Beatrice of York (UK) | Chelsea and Westminster Hospital, London, UK |
| October 6 | Ida | Prince Ferdinand and Princess Eleonora von Schönburg-Hartenstein | |
| December 24 | Hamdan | Sheikh Faisal bin Saud bin Khalid Al Qassimi of Ras Al Khaimah and Sheikha Latifa bint Mohammed Al Maktoum of Dubai | |
| Date unknown | Daughter | Count Lelio and Countess Stefanie von Colloredo-Mannsfeld | |
| * Date unknown (July?) | Camilla | Count Constantin and Countess Sophie Fugger von Babenhausen | |
| * Date unknown | Valentina | Prince Philipp and Princess Laetitia von Hessen | |
| Date unknown | Xavier | Prince Carl-Johann de Nassau and his wife Ivanna Jamin | |
| * Date unknown | Daughter | Prince Felix and Princess Victoria zu Salm-Salm |
Christenings
| Date | Name | Parents | Place |
| January 23 | Maria-Alexandra | Nicholas and Alina-Maria de Roumanie Medforth-Mills | New Archdiocese Cathedral, Curtea de Argeș Monastery, Romania |
| * February | Cecilia Maria Josephine Adélaïde Henriette | Archduke Imre and Archduchess Kathleen of Austria | |
| May 31 | Bagrat | Prince Juan and Princess Kristine Bagration (Georgia) | Svetitskhoveli Cathedral, Mtskheta, Georgia |
| August 14 | Julian Herbert Folke, Duke of Halland | Prince Carl Philip and Princess Sofia of Sweden | Palace Church, Drottningholm Palace, Stockholm, Sweden |
| * October 9 | Arthur Philip Erik Marie | Joseph and Anna Louise de Bourbon de Parme | Ledreborg Castle, Denmark |
| November 21 | August Philip Hawke | Jack Brooksbank and Princess Eugenie of York (UK) | All Saints Chapel, Great Windsor Park, Windsor, UK |
| November 21 | Lucas Philip | Michael and Zara Tindall (UK) | All Saints Chapel, Great Windsor Park, Windsor, UK |
Archduke Christoph and Archduchess Adelaide of Austria has 3 children now. What day their son Archduke Joseph was born on October 2020?
If it isn’t listed it is not known (yet).