Last modified: 2 March 2021
Deaths in reigning and non-reigning royal houses of the year 2010.
* = New
| Date | Name | Age | Place |
| 6 January | Marie-Agnes Prollius née Countess zu Solms-Baruth | 93 | München, Germany |
| 13 January | Fürst Alfred-Ernst zu Löwenstein-Wertheim-Freudenberg | 85 | Kreuzwertheim, Germany |
| 21 January | Sheikh Abdulrahman bin Ibrahim Al Khalifa of Bahrain | ||
| 21 January | Count Christian zu Castell-Rüdenhausen | 57 | |
| 22 January | Iskandar Ismail, Sultan of Johor | 77 | Puteri Specialist Hospital, Johor, Malaysia |
| 28 January | Prince Lamoral von Thurn und Taxis | 72 | Vienna, Austria |
| 29 January | Dalal Mohammad Abdullah Al-Rebee’a (Kuwait) | 77 | |
| 29 January | Sheikh Mohammed bin Khalid bin Ahmed Al Qasimi of Sharjah (UAE) | ||
| 3 February | Archduchess Regina of Austria née Princess von Sachsen-Meiningen | 85 | Villa Austria, Pöcking am Starnberger See, Germany |
| 7 February | Princess Gabriella Lobkowicz | 91 | Prague, Czechia |
| 8 February | Count Albrecht Sizzo zu Solms-Wildenfels | 80 | Wiesbaden, Germany |
| 9 February (car crash) | Prince Alexis zu Windisch-Graetz | 18 | Ospedale San Sebastiano, Caserta, Italy |
| 12 February | Shahzada Khushwaqt ul Mulk, Prince of Chitral | 96 | Islamabad, Pakistan |
| 15 February | Count Christoph von und zu Trauttmansdorff-Weinsberg | 68 | |
| 16 February | Princess Erina von Sachsen née Eilts | 88 | Emden, Germany |
| * 16 February | Olivier Charbonneaux (Croÿ) | 67 | Luthenay-Uxeloup, Nièvre, France |
| * 17 February | Jean-Bernard Venturini (Spain) | 65 | Colombes, Hauts-de-Seine, France |
| 21 February | Sarala Manandhar (Nepal) | 90 or 91 | Kathmandu, Nepal |
| 21 February | Prince Casimir-Johannes zu Sayn-Wittgenstein-Berleburg | 93 | |
| 24 February | Sheikh Mubarak bin Mohammed Al Nayhan of Abu Dhabi (UAE) | Abu Dhabi, UAE | |
| 6 March | Prince Hubertus zu Bentheim und Steinfurt | 90 | Ibbenbüren, Germany |
| 11 March | Princess Sheikha bint Abdulrahman Al Faisal Al Saud of Saudi Arabia | 95 | |
| 12 March | Prince Saud bin Hazlul bin Saud bin Abdulaziz of Saudi Arabia | ||
| 12 March | Anissa Malikyar née Princess of Afghanistan | 84 | Alexandria, Virginia, USA |
| 15 March | Hereditary Grand Duchess Elisabeth von Sachsen-Weimar-Eisenach | 98 | München, Germany |
| 23 March (burial) | Sheikh Fahad Mubarak Sabah Al Nasser Al Sabah of Kuwait | 50 | |
| 24 March | Fürst Maximilian zu Khevenhüller-Metsch | 90 | Niederosterwitz, Austria |
| 26 March (plane crash) | Sheikh Ahmed bin Zayed al-Nayhan of Abu Dhabi (UAE) | Morocco | |
| 2 April | Prince Edouard de Lobkowicz | 83 | Paris, France |
| 6 April | Baron Augustin d’Aboville (Fürstenberg) | 72 | Paris, France |
| 7 April | Prince Fahd bin Saud Al-Kabeer of Saudi Arabia | 67 | |
| 12 April | Countess Hedwig zu Stolberg-Stolberg | 87 | |
| 14 April | Prince Johannes Heinrich von Sachsen-Coburg und Gotha | 79 | Innsbruck, Austria |
| 17 April | Sheikh Rashid bin Adbul Aziz bin Rashid al Nuaimi of Ajman (UAE) | 23 | |
| 17 April | The mother of Prince Mansour bin Miteb bin Abdulaziz of Saudi Arabia | 75 | Jeddah, Saudi Arabia |
| 17 April | Inkhosikati LaMhlanga (Swaziland) | 73 | |
| 22 April | Sheikha Nora bint Sultan bin Ahmed al Mualla of Umm Al Quwain (UAE) | ||
| 24 April (car crash) | Hereditary Prince Carl Friedrich zu Löwenstein-Wertheim-Rosenberg | 43 | Nürburgring, Nürburg, Germany |
| 24 April | Rafael Ernesto Longo (Waldbott-Bassenheim) | Buenos Aires, Argentina | |
| 5 May | Sheikha Hessa Abdullah bin Issa bin Ali Al-Khalifa of Bahrain | ||
| 5 May | Gert Sielaff (Oettingen-Wallerstein) | 58 | |
| 9 May | Per-Edvard Lithander (Prussia) | 64 | Göteborg, Sweden |
| 9 May | Prince Naif bin Abdullah bin Abdulrahman of Saudi Arabia | 60 | |
| 15 May | Archduke Rudolph of Austria | 90 | Brussels, Belgium |
| 16 May | King Kaswarra Patrick Mutengesa II of Mitego (Congo) | 81 | Fort Portal municipality, Uganda |
| 22 May | King Lwandile Zwelenkosi Matanzima of AbaThembu BaseRhoda | 39 | Life St Dominic’s Hospital, East London, South Africa |
| 23 May | Grand Duchess Leonida Georgievna of Russia née Princess Bagration-Mukhransky | 95 | Hospital La Paz, Madrid, Spain |
| 5 June | Sheikh Nawaf Bader Saud Al-Malek Al-Sabah of Kuwait | 88 | |
| 12 June | Count Karl Max von Schaesberg | 88 | |
| 17 June (shot) | Sheikh Basel Salem Sabah Al-Salem Al-Sabah | 52 | |
| 25 June | Howard Oxenberg (Yugoslavia) | 90 | Palm Beach Gardens, FL, USA |
| 27 June | Sayyid Thuwainy bin Shihab bin Faisal al Said of Oman | 85 or 86 | |
| 4 July | Maharajkumari Karuna Devi of Burdwan | 72 | Calcutta, India |
| 6 July | Sheikh Isa bin Ibrahim Al Khalifa of Bahrain | ||
| 12 July | Queen Damali of Buganda | 80 or 81 | Nakasero Hospital, Uganda |
| 15 July | Prince Osman Nami Osmanoglu Bey Efendi (Turkey) | 92 | Dr. Siyami Hersek Cardiovascular Surgery Hospital in Istanbul, Turkey |
| 26 July | Countess Caroline von Wedel (Reuss) | 87 | Frankfurt am Main, Germany |
| 27 July | Josef Christoforetti (Windisch-Graetz) | 91 | Salzburg, Austria |
| 28 July | Sheikha Badria Saud Al-Mohammad Al-Sabah of Kuwait | 85 | |
| 1 August | Maharaja of Dhrangadhra-Halvad | 87 | |
| 1 August | Maria Anna Freifrau von Mayr-Melnhof née Countess von Orsini und Rosenberg | 82 | Salzburg, Austria |
| 11 August | Sheikha Maryam bint Ghanem bin Salim Al Shamsi of Sharjah (UAE) | 95 | |
| 17 August | Glen Lee Hollinger (Schönborn) | 74 | Los Angeles, CA, USA |
| 18 August | Prince Carlos Hugo de Bourbon de Parme, Duke of Parma and Piacenza | 80 | Barcelona, Spain |
| 19 August (motorcycle accident) | Prince Richard zu Sayn-Wittgenstein-Berleburg | 58 | Near Half Moon Road, six miles south of Deer Park, WA, USA |
| 20 August | Princess Hessah bint Turki bin Abdulaziz bin Abdullah bin Turki Al Saud of Saudi Arabia | 75 | |
| 22 August | Princess Hind al-Fassi (Saudi Arabia) | Cairo, Egypt | |
| 28 August | Johanna Freifrau von Aretin née Countess Colloredo-Mansfeld | 87 | |
| 5 September | Countess Brydgytte Blanche Bentinck | 93 | Haren (GR), The Netherlands |
| 12 September | Prince Ulrich zu Wied | 79 | Rottach-Egern, Germany (?) |
| 16 September | Sheikha Asila bint Saif bin Surour Al Sharqi of Fujairah (UAE) | 90 | |
| 16 September | Fürst Friedrich Wilhelm von Hohenzollern | 76 | Sigmaringen, Germany |
| 19 September | Prince Ferdinand zu Bentheim und Steinfurt | 72 | Bornheim, Germany |
| 27 September | Archduchess Engel Virginia of Austria-Tuscany | 73 | Vienna, Austria |
| 4 October | Countess Wilhelmine von Keyserling née Princess von Auersperg | 89 | Vienna, Austria |
| 6 October | Countess Gabrielle von Kuefstein née Countess von Mensdorff-Pouilly | 84 | Hospital, Horn, Austria |
| 9 October | Maria Kainz née Princess von Auersperg | 92 | Waidhofen an der Thaya, Austria |
| 10 October | Sheikha Huda Badr al Muhammad Al-Ahmed Al-Sabah of Kuwait | 48 | |
| 12 October | Sheikh Ahmad Mohammad Faisal Al-Malek Al-Sabah of Kuwait | 66 | |
| 23 October | Princess Irmingard of Bavaria | 87 | Leutstetten, Germany |
| 27 October | Sheikh Saqr bin Mohammed Al Qasimi, Ruler of Ras al Khaimah (UAE) | 90 or 92 | Ras Al Khaimah, UAE |
| 29 October | Countess Juliana von Wurmbrand-Stuppach née Galich | 82 | CA, USA |
| 4 November | Wolfram Freiherr von Strachwitz und Gross-Zauche (Croÿ) | 77 | Bonn, Germany |
| 7 November | Sheikh Abdul Aziz bin Humaid bin Mohammed Al Qasimi of Ras Al Khaimah (UAE) | ||
| 13 November | Count Dieter von Brühl (Waldburg zu Wolfegg und Waldsee) | 84 | |
| * 15 November | Mrs Max Descraques Princess Nguyen Thi Nhon (Vietnam) | 84 | Nice, Alpes-Maritimes, France |
| 17 November | Princess Hessah bint Khalid bin Abdulaziz of Saudi Arabia | 59 | abroad |
| 23 November | Prince Badr ibn Turki ibn Abdulaziz ibn Faisal Al Saud of Saudi Arabia | 31 | |
| * 24 November | Heinz Otto (Solms-Laubach) | 83 | |
| 29 November | Princess Margarete zur Lippe-Weissenfeld | 78 | Rendsburg, Germany |
| 2 December | Sheikh Nasser Mohammad Al-Salman Al-Sabah of Kuwait | 75 | |
| 5 December (car crash) | Sheikh Khalifa bin Abdulla bin Hassan bin Ali al-Thani of Qatar | 20s | Anbar province, Iraq |
| 10 December | Countess Marie Christine Wolff Metternich née Altgräfin zu Salm-Reifferscheidt-Krautheim und Dyck | 78 | Göttingen, Germany |
| 17 December | Sheikh Rashid bin Isa bin Salman Al Khalifa of Bahrain | Germany | |
| 20 December | Prince Friedrich von und zu Liechtenstein | 73 | Riegersburg, Austria |
| 27 December | Prince Badr bin Musaed bin Abdulla bin Abdulrahman al-Saud of Saudi Arabia | 33 | |
| 28 December | Heinz Köster (Thurn und Taxis) | 79 | Königstein-Falkenstein, Germany (?) |
| 29 December | Thomas Landsberg (Sachsen-Weimar-Eisenach) | 65 | |
| Exact date unknown | Princess Waltraud of Prussia née Freydag | 69 or 70 |