List of Famous people with last name Iii

Attalus III Philometor Euergetes was the last Attalid king of Pergamon, ruling from 138 BC to 133 BC.

Charles Francis "Deacon" Adams III was an American politician. He was a member of the prominent American Adams family, was the United States Secretary of the Navy under President Herbert Hoover and a well-known yachtsman.

Ulrich III was the Lord in the March of Carniola from c. 1249 and Duke of Carinthia from 1256 until his death, the last ruler from the House of Sponheim. His rule had long-lasting consequences. In Carniola, he acquired the former Meranian possessions, thus becoming the first undisputed princeps terrae, provincial lord or landgrave, creating the power and legal basis of the future Duchy of Carniola. The center of his original Carniolan possessions, Ljubljana, became the new administrative center and thus the provincial capital. In Carinthia, which he took over after his father's death, his seal became the coat of arms of Carinthia up to today. Despite his attempts to secure the vast Babenberg inheritance through two marriages, first to Agnes of Merania, widow of the last Babenberg duke Frederick II of Austria, and then to Frederick's niece Agnes of Baden, Ulrich remained childless. After a short interregnum by his younger brother Philip of Spanheim, patriarch of Aquileia, the House of Spanheim went extinct, and all of Ulrich's possessions were inherited by his cousin Ottokar I of Bohemia.

Heraclius Constantine, often enumerated as Constantine III, was one of the shortest reigning Byzantine emperors, ruling for three months in 641. He was the eldest son of Emperor Heraclius and his first wife Eudokia.

Nicholas III, Lord of Mecklenburg was from 1264 to 1289 Lord of Mecklenburg.

Artaxias III, also known as Zeno-Artaxias, was a Pontus prince and later a Roman Client King of Armenia.