List of Famous people with last name I

Louis I, called the Kelheimer or of Kelheim, since he was born and died at Kelheim, was the Duke of Bavaria from 1183 and Count Palatine of the Rhine from 1214. He was a son of Otto I and his wife Agnes of Loon. Louis was married to Ludmilla, a daughter of Duke Frederick of Bohemia.

Salome I was the sister of Herod the Great and the mother of Berenice by her husband Costobarus, governor of Idumea. She was a nominal queen regnant of the toparchy of Iamnia, Azotus, Phasaelis from 4 BCE.

Rajaram Bhosle I was the second son of Maratha ruler Shivaji, and younger half-brother of Sambhaji. He took over the Maratha Empire as its third Chhatrapati after his brother's death at the hands of the Aurangzeb in 1689. His eleven-year reign was marked with a constant struggle against the Mughals.

Rana Sangram Singh Sisodia, popularly known as Rana Sanga, was an Indian Hindu ruler of Mewar who reunited several Rajput clans to form a powerful Rajput confederation in Rajputana during the 16th century. He succeeded his father, Rana Raimal, as the ruler of Mewar in 1508. Sanga contemporarily fought against the Afghan Lodhi dynasty and Turkic Mughals during his lifetime.

Tudhaliya I was a king of the Hittite empire ca. the early 14th century BC.

Attalus I, surnamed Soter ruled Pergamon, an Ionian Greek polis, first as dynast, later as king, from 241 BC to 197 BC. He was the first cousin once removed and the adoptive son of Eumenes I, whom he succeeded, and was the first of the Attalid dynasty to assume the title of king in 238 BC. He was the son of Attalus and his wife Antiochis.

Laodice I was a Greek noblewoman of Anatolia who was a close relative of the early Seleucid dynasty and was the first wife of the Seleucid Greek King Antiochus II Theos.

Otto the Mild, Duke of Brunswick-Lüneburg, ruled over the Brunswick part of the duchy.

Ernest I was the Duke of Swabia (1012–1015). He was a younger son of Leopold I, the Babenberg Margrave of Austria. His mother was called Richardis of Sualafeldgau.