Nelsonia may refer to: Nelsonia (rodent), a genus of Mexican rodents in the family Cricetidae Nelsonia (plant), a plant genus in the family Acanthaceae Nelsonia, a synonym of Abatetia, a genus of flies in the family Dolichopodidae Paleonelsonia, a trilobite genus formerly known as Nelsonia Nelsonia, New Zealand, a geographical area covering the northern South Island of New Zealand Nelsonia, Virginia, an unincorporated community in Virginia 3538 Nelsonia, an asteroid