S. menglaensis may refer to:
- Salacia menglaensis , a plant in the Celastraceae family
- Sarcocystis menglaensis, a protozoan parasite in the Sarcocystidae family
- Schefflera menglaensis , a plant in the Araliaceae family
- Semnostachya menglaensis, a synonym for Strobilanthes tonkinensis, a plant in the Acanthaceae family
- Seriana menglaensis , a leafhopper in the Cicadellidae family
- Sinthusa menglaensis , a butterfly in the Lycaenidae family
- Sphingonotus menglaensis , a species of grasshopper in the Acrididae family
- Sylvirana menglaensis, a synonym for Sylvirana nigrovittata, a species of frog in the Ranidae family
- Synanthedon menglaensis , a butterfly in the Sesiidae family