Delbhna Tír Dha Locha, also known as Dealbhna Fiodh Tíre Da Loch ("The Delbhna of the Fews of the Two Lakes") was both the name of a people and a kingdom of ancient Ireland, located in Iar Connacht (correct Irish spelling Iar Chonnachta).

"Fiodh", anglicised the Fews, litterly means "heather", denoting a rough, unfertile area. The two loughs or lakes concerned were Loch Oribsen (Loch Corrib, a fresh water lough) and Lough Lurgain (Galway Bay a sea lough).

Dealbhna Tír Dha Locha comprised of the civil parishes (which are coextensive with the medieval parishes of the same names) of Kilcummin, Killannin, Moycullen and Rahoon. Conmaicne Mara / Connemara bordered the territory on the west while Joyce Country lies to the north of the territory. The entire territory west of Galway City is now referred to as Connamara .

Tír Dha Locha was divided into two sub-sections; Gno Mhór which covers the civil parish of Kilcummin and most of the civil parish of Killannin and Gno Beg, which covers the civil parishes of Moycullen and Rahoon and part of the parish of Killannin. Ó hAdhnaigh (Heeney) was the chieftan of Gno Beg, Mac Conraoi (anglicised - Conry,King) ruler of Gno Mor. These local dynastys were overthrown by the O'Flahertys in the 1220's, and ruled the territory until the mid 17th centuary.