Derbforgaill, Dearbhfhorgaill or Dearbhfhorghaill may refer to:

• Derbforgaill (1st century BC), wife of Lugaid Riab nDerg
• Der Forgaill, died 684.
• Derbfhorgaill, Princess of Leinster, died 1080.
• Derbforgaill ingen Teige, Queen of Ireland, died 1098.
• Derbforgaill Ní Lochlainn, Queen of Connacht, died 1151.
• Derbforgaill Ní Flainn, died 1176.
• Derbforgaill, Princess of Midhe, 1108-1193.
• Derbforgaill Ní Dubhda, Princess of Uí Fiachrach Muaidhe, died 1265.
• Dervorguilla of Galloway, c. 1210-1290
• Derbforgaill Ní Flionn Esa, died 1296.
• Derbforgaill Ní Conchobair, died 1314.
• Derbforgaill Ní Chonchobair, died 1351.
• Derbforgaill Ní Fherghail, died 1355.
• Derbforgaill Ní Conchobair Ruaid, died 1385.
• Derbforgaill Ní Conchobair Duinn, died 1476.
• Derval O'Rourke, Irish athlete, born 1981.