Ricard mac Seaán an Tearmainn Bourke, 16th Mac William Íochtar (English: /bɜːrk/; BURK; died 1571) was an Irish chieftain and noble. Ricard was the son of Seaán an Tearmainn Bourke, 13th Mac William Íochtar. He succeeded his cousin, David de Búrca, 15th Mac William Íochtar, the son of Edmond de Búrca, 12th Mac William Íochtar (d.1527). Ricard was succeeded by another cousin, Seaán mac Oliver Bourke, 17th Mac William Íochtar (d.1580).