Dermot O'Neill

Dermot O'Neill may refer to:

• Dermot O'Neill (gardener) (died 2022), Irish gardener, author, magazine editor and TV presenter
• Dermot O'Neill (footballer) (born 1960), Irish association football player
• Diarmuid O'Neill (1969–1996), Irish republican

{{hndis|Oneill, Dermot}}