Killarah (Irish derived place name either Coill an Rátha meaning 'The Wood of the Fort' or Coill Leath Ráth = 'The Wood of the Half-Fort' or Coill Áth Ráth meaning 'The Wood of the Ford of the Rath') is a townland in the civil parish of Kildallan, barony of Tullyhunco, County Cavan, Ireland.