Jacques I may also refer to:
- Jacques I, Emperor of Haiti (1758–1806), the Emperor of Haiti
- Jacques I, Prince of Monaco (1689–1751), the Prince of Monaco
- Jacques I of Cyprus (1334–1398), the Regent of Cyprus
- Jaime, Duke of Madrid (1870–1931), the Duke of Madrid
- Jacques I, Emperor of the Sahara 1903, self-proclaimed Emperor of the Sahara
This disambiguation page lists articles associated with the title Jacques I.
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