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John IV lord of Arlay, prince of Orange | |
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 Coat of arms of Chalon (red shild with yellow ribbon) and Orange (blue bugle); over all the (claimed) pattern of Geneva. | |
| Born | c. 1443 |
| Died | 15 April 1502 |
| Buried | Convent of Cordeliers Lons-le-Saunier, County of Burgundy |
| Noble family | House of Chalon-Arlay |
| Spouse(s) | Jeanne de Bourbon Philiberte de Luxembourg |
| Issue | Philibert of Chalon Claudia of Chalon |
| Father | William VII lord of Arlay, prince of Orange |
| Mother | Catherine of Brittany |
John IV of Chalon-Arlay or John of Chalon (c. 1443-15 April 1503) was a prince of Orange and lord of Arlay. He played an important role in the Mad War, a series of conflicts in which aristocrats sought to resist the expansion and centralisation of power under the French monarch.