Otto IV (c. 1248, in Ornans – 17 March 1303, in Melun[1]) was the count of the Free County of Burgundy from 1279 until 1303.

Otto was the son of Hugh of Châlons and Adelaide, Countess Palatine of Burgundy.

In 1267, the pro-French Otto IV got in conflict with his half-uncle John I of Chalon-Arlay, who was supported by his vassals.

[4] His elder daughter Joan II succeeded in the County of Burgundy, which was later given as dowry on her marriage to Philip.

[6] A lion was shown beneath his feet with two angels to support the pillow under his head.