Risdeárd de Búrca, 6th Mac William Íochtar (died 1473) was an Irish chieftain and noble.

Risdeárd was the son of Thomas mac Edmond Albanach de Búrca, 2nd Mac William Íochtar (d.1402).

He succeeded his brothers, Walter mac Thomas de Búrca, 3rd Mac William Íochtar (d.1440), Edmund na Féasóige de Búrca, 4th Mac William Íochtar (d.1458), and Tomás Óg de Búrca, 5th Mac William Íochtar (d.1460) as chieftain in 1460.

Risdeárd was succeeded by Ricard Ó Cuairsge Bourke, 7th Mac William Íochtar (d.1473), the son of Edmund na Féasóige de Búrca, 4th Mac William Íochtar.

[2][3] From the Annals of the Four Masters: