Louis I may refer to:
Cardinals
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Louis I, Cardinal of Guise (1527–1578)
Counts
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Ludwig I, Count of Württemberg (c. 1098–1158)
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Louis I of Blois (1172–1205)
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Louis I of Flanders (1304–1346)
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Louis I of Châtillon (died 1346)
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Louis I, Count of Montpensier (1405–1486)
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Louis Günther I, Count of Schwarzburg-Rudolstadt (1581–1646)
Dukes
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Louis I Wittelsbach, Duke of Bavaria (1173–1231)
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Louis I, Duke of Bourbon (1279–1342)
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Louis of Valois, Duke of Orléans (1372–1407)
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Louis I, Duke of Bar (died in 1430)
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Louis I, Grand Duke of Hesse (1753–1830), previously Louis X, Landgrave of Hesse-Darmstadt
Kings
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Louis the Pious
Louis the Pious (; ; ; 16 April 778 – 20 June 840), also called the Fair and the Debonaire, was King of the Franks and Holy Roman Emperor, co-emperor with his father, Charlemagne, from 813. He was also King of Aquitaine from 781. As the only ...
, Louis I of France, "the Pious" (778–840), king of France and Holy Roman Emperor
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Louis I of Hungary
Louis I, also Louis the Great (; ; ) or Louis the Hungarian (; 5 March 132610 September 1382), was King of Hungary and Croatia from 1342 and King of Poland from 1370. He was the first child of Charles I of Hungary and his wife, Elizabeth of ...
, Louis I of Poland and Hungary, (1326–1382)
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Louis I of Naples (1339–1384)
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Louis I of Spain (1707–1724)
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Louis I of Etruria (1773–1803)
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Louis Bonaparte
Louis Bonaparte (born Luigi Buonaparte; 2 September 1778 – 25 July 1846) was a younger brother of Napoleon, Napoleon I, Emperor of the French. He was a monarch in his own right from 1806 to 1810, ruling over the Kingdom of Holland (a French c ...
(1778–1846), King of Holland 1806–1810 as Louis I
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Ludwig I of Bavaria (1786–1868)
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Luís I of Portugal
Dom (title), ''Dom'' Luís I (; 31 October 1838 – 19 October 1889), known as "the Popular" (Portuguese language, Portuguese: ''o Popular'') was King of Portugal from 1861 to 1889.
Luís was a member of the ruling House of Braganza. The second ...
(1838–1889)
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Louis VIII of France
Louis VIII (5 September 1187 8 November 1226), nicknamed The Lion (), was King of France from 1223 to 1226. As a prince, he invaded Kingdom of England, England on 21 May 1216 and was Excommunication in the Catholic Church, excommunicated by a ...
who claimed the throne of England as Louis I of England, (1216–1217)
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Louis X of France
Louis X (4 October 1289 – 5 June 1316), known as the Quarrelsome (), was King of France from 1314 and King of Navarre (as Louis I) from 1305 until his death. He emancipated serfs who could buy their freedom and readmitted Jews into the king ...
, also known as Louis I of Navarre (1289–1316)
Landgraves
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Louis I, Landgrave of Thuringia (ruled 1123–1140)
Princes
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Louis I de Bourbon, Prince de Condé (1530–1569)
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Louis I, Prince of Monaco (1642–1701)
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Louis Frederick I, Prince of Schwarzburg-Rudolstadt (1667–1718)
{{hndis, Louis I