Holy Roman Empress in the context of "Beatrice I, Countess of Burgundy"

Maria Theresa of Naples and Sicily (6 June 1772 – 13 April 1807) was the first Empress of Austria and last Holy Roman Empress as the spouse of Francis II. She was born a Princess of Naples as the eldest daughter of King Ferdinand I of the Two Sicilies and Queen Maria Carolina.

Empress Matilda (c. 7 February 1102 – 10 September 1167), also known as Empress Maud, was Holy Roman Empress as the consort of Emperor Henry V from 1110 until his death in 1125, and was subsequently a claimant to the English throne during the civil war known as the Anarchy. Following the death of her father, King Henry I of England, she asserted her right to the English throne as his only surviving legitimate child and styled herself Lady of the English. However, her cousin Stephen of Blois was crowned king in her place.

Matilda was the only daughter and eldest child of Henry I, king of England and ruler of Normandy, by his first wife Matilda of Scotland, to survive to adulthood. As a child, she went to Germany where she was married to the future Henry V. She travelled with the emperor to Italy in 1116, was controversially crowned empress in St Peter's Basilica, and acted as the imperial regent in Italy. Matilda and Henry V had no children, and when he died in 1125, the imperial crown was claimed by his rival Lothair of Supplinburg.

Isabella of Portugal (Portuguese: Isabel de Portugal; 24 October 1503 – 1 May 1539) was the empress consort of Charles V, Holy Roman Emperor, King of Spain, Archduke of Austria, and Duke of Burgundy. She was Queen of Spain and Germany, and Lady of the Netherlands from 10 March 1526 until her death in 1539, and became Holy Roman Empress and Queen of Italy in February 1530. She acted as regent of Spain during her husband's long absences.

Maria Theresa (Maria Theresia Walburga Amalia Christina; 13 May 1717 – 29 November 1780) was the ruler of the Habsburg monarchy from 1740 until her death in 1780, and the only woman to hold the position in her own right. She was the sovereign of Austria, Hungary, Croatia, Bohemia, Transylvania, Slavonia, Mantua, Milan, Moravia, Galicia and Lodomeria, Dalmatia, Austrian Netherlands, Carinthia, Carniola, Gorizia and Gradisca, Austrian Silesia, Tyrol, Styria and Parma. By marriage, she was Duchess of Lorraine, Grand Duchess of Tuscany, and Holy Roman Empress.

Maria Theresa started her 40-year reign when her father, Charles VI, Holy Roman Emperor, died on 20 October 1740. Charles VI paved the way for her accession with the Pragmatic Sanction of 1713 and spent his entire reign securing it through international diplomacy. He neglected the advice of Prince Eugene of Savoy, who believed that a strong military and a rich treasury were more important than mere signatures. Eventually, Charles VI left behind a weakened and impoverished state, particularly due to the War of the Polish Succession and the Russo-Turkish War (1735–1739). Moreover, upon his death, Saxony, Prussia, Bavaria, and France all repudiated the sanction they had recognised during his lifetime. Frederick II of Prussia (who became Maria Theresa's greatest rival for most of her reign) promptly invaded and took the affluent Habsburg province of Silesia in the eight-year conflict known as the War of the Austrian Succession. In defiance of the grave situation, she managed to secure the vital support of the Hungarians for the war effort. During the course of the war, Maria Theresa successfully defended her rule over most of the Habsburg monarchy, apart from the loss of Silesia and a few minor territories in Italy. Maria Theresa later unsuccessfully tried to recover Silesia during the Seven Years' War.

Queen of the Romans (Latin: Regina Romanorum, German: Königin der Römer) or Queen of the Germans were the official titles of the queens consort of the medieval and early modern Kingdom of Germany. They were the wives of the King of the Romans (chosen by imperial election), and are informally also known as German queen (German: Deutsche Königin). A Queen of the Romans also became Holy Roman Empress if her husband was crowned Holy Roman Emperor, in the Middle Ages usually by the Pope in Rome during an Italienzug. Most elected Kings of the Romans did, but some never made it that far, and thus their wives only ever achieved the status of Queen of the Romans.

Empress Maria Theresa (1745–1780) is often considered to be a ruler in her own right, as she was Queen regnant of Bohemia and Hungary, and although her husband Francis I was crowned Holy Roman Emperor in 1745, it was she who ruled the Empire and continued to do so even after Francis' death in 1765 before ruling jointly with her son Emperor Joseph II.

This is a list of the queens consorts of Hungary (Hungarian: királyné), the consorts of the kings of Hungary. After the extinction of the Árpád dynasty and later the Angevin dynasty, the title of King of Hungary has been held by a monarch outside of Hungary with a few exceptions. After 1526, the title of Queen of Hungary belonged to the wife of the Habsburg Emperors who were also King of Hungary.

Queens of Hungary also held the titles after 1526: Holy Roman Empress (later Empress of Austria) and Queen consort of Bohemia. Since Leopold I, all kings of Hungary used the title of Apostolic King of Hungary – the title given to Saint Stephen I by the Pope – and their wives were styled as Apostolic Queens of Hungary.

Adelaide of Italy (German: Adelheid; 931 – 16 December 999 AD), also called Adelaide of Burgundy, was Holy Roman Empress by marriage to Emperor Otto the Great. She was crowned with him by Pope John XII in Rome on 2 February 962. She was the first German queen more consistently designated as consors regni, denoting a "co-bearer of royalty" who shared power with her husband. She was essential as a model for future consorts regarding both status and political influence. She was regent of the Holy Roman Empire as the guardian of her grandson in 991–995.

Margaret Theresa of Spain (Spanish: Margarita Teresa, German: Margarete Theresia; 12 July 1651 – 12 March 1673) was, by marriage to Leopold I, Holy Roman Empress, German Queen, Archduchess of Austria and Queen of Hungary and Bohemia. She was the daughter of King Philip IV of Spain and the elder full-sister of Charles II, the last of the Spanish Habsburgs. She is the central figure in the famous Las Meninas by Diego Velázquez, and the subject of many of his later paintings.