Nemoria is a genus of emerald moths in the family Geometridae. It was named by Jacob Hübner in 1818.

 Palpi porrect (extending forward). Forewings with veins 7, 8, 9 and 10 stalked and veins 6 and 11 often being stalked with them. Vein 11 anastomosing (fusing) with vein 12, and then with vein 10. Hindwings with rounded outer margin. Veins 3, 4 and 6, 7 stalked. Frenulum present.

Species: Species include:

• Nemoria aemularia Barnes & McDunnough, 1918
• Nemoria albaria (Grote, 1883)
• Nemoria albilineata Cassino, 1927
• Nemoria arizonaria (Grote, 1883)
• Nemoria bifilata (Walker, [1863]) – white-barred emerald
• Nemoria bistriaria Hübner, 1818 – red-fringed emerald
• Nemoria caerulescens Prout, 1912
• Nemoria catachloa (Hulst, 1898)
• Nemoria daedalea Ferguson, 1969
• Nemoria darwiniata (Dyar, 1904) – Columbian emerald
• Nemoria diamesa Ferguson, 1969
• Nemoria elfa Ferguson, 1969 – cypress emerald
• Nemoria extremaria (Walker, 1861)
• Nemoria festaria (Hulst, 1886)
• Nemoria glaucomarginaria (Barnes & McDunnough, 1917)
• Nemoria intensaria (Pearsall, 1911)
• Nemoria latirosaria (Pearsall, 1906)
• Nemoria leptalea Ferguson, 1969
• Nemoria lixaria (Guenée, [1858]) – red-bordered emerald
• Nemoria mimosaria (Guenée, [1858]) – white-fringed emerald
• Nemoria mutaticolor Prout, 1912
• Nemoria obliqua (Hulst, 1898)
• Nemoria outina Ferguson, 1969
• Nemoria pistaciaria (Packard, 1876)
• Nemoria pulcherrima (Barnes & McDunnough, 1916)
• Nemoria rindgei Ferguson, 1969
• Nemoria rubrifrontaria (Packard, 1873) – red-fronted emerald
• Nemoria saturiba Ferguson, 1969
• Nemoria splendidaria (Grossbeck, 1910)
• Nemoria strigataria (Grossbeck, 1910)
• Nemoria subsequens Ferguson, 1969
• Nemoria tuscarora Ferguson, 1969
• Nemoria unitaria (Packard, 1873) – single-lined emerald
• Nemoria viridicaria (Hulst, 1880)
• Nemoria zelotes Ferguson, 1969
• Nemoria zygotaria (Hulst, 1886)