Memnonia or Memnonium may refer to:
Places Memnonia quadrangle, a region of Mars Memnonia Institute, defunct health institute in Yellow Springs, Ohio, opened by Mary Gove Nichols Monuments in Egypt described by Strabo (XVII.42) as a Memnonium the Labyrinth sites in Abydos sites in Thebes Memnonium, name used by travelers and visitors to Thebes, Egypt for the ruins of the Ramesseum around 1750-1850 (including variants like Temple of Memnon or Memnonia)
Taxonomy Memnonia (leafhopper), a leafhopper genus in the subfamily Deltocephalinae Bactrocera memnonia, a fruit fly species in the genus Bactrocera Castianeira memnonia, a large brown-black clubionid spider species in the genus Castianeira Rhynchosia memnonia, a plant species in the genus Rhynchosia Memnonium (fungus), a genus of fungi in the Piedraiaceae family