The Irish state has officially approved the following list of national monuments in County Leitrim. In the Republic of Ireland, a structure or site may be deemed to be a " national monument", and therefore worthy of state protection, if it is of national importance. If the land adjoining the monument is essential to protect it, this land may also be protected.

National Monuments

NM#	Monument name	Description	Image	Townland	Location
477	Aghaderrard Court Tomb	Court Tomb		Aghaderrard West	54°26′06″N 8°14′20″W / 54.43489°N 8.23893°W / 54.43489; -8.23893
68	Fenagh Churches	Churches		Fenagh	54°01′05″N 7°50′06″W / 54.018027°N 7.834934°W / 54.018027; -7.834934
405	Corracloona Court Tomb	Megalithic Tomb		Corracloona	54°20′05″N 8°00′16″W / 54.334821°N 8.004539°W / 54.334821; -8.004539
69	Creevelea Abbey	Friary (Franciscan)		Creevelea	54°13′53″N 8°18′35″W / 54.231291°N 8.309791°W / 54.231291; -8.309791
390	Parke's Castle	Castle		Dromahair	54°15′53″N 8°20′04″W / 54.264768°N 8.334429°W / 54.264768; -8.334429
508	Seán Mac Diarmada's House	House with historical associations		Kiltyclogher
653	Worm Ditch (Black Pig's Dyke)	Linear Earthwork		Lattone, Gortnaderrary	54°22′45″N 8°04′12″W / 54.379178°N 8.069929°W / 54.379178; -8.069929

Sources

• National Monuments in County Leitrim