S. nana may refer to:
Scoliacma nana, a moth species found in Australia Scutellaria nana, the dwarf skullcap, a plant species Siebera nana, a plant species in the genus Siebera found in Palestine Sphingonaepiopsis nana, the savanna hawkmoth, a moth species found from Iran to Natal Stelis nana, Lindl., 1858, an orchid species in the genus Stelis found in Ecuador and Peru Stiobia nana, the sculpin snail, a gastropod species endemic to the United States Sturnira nana, the lesser yellow-shouldered bat, a bat species endemic to Peru Sylvia nana, the Asian desert warbler, a bird species found in south central temperate Asia Synanceia nana, the Red Sea stonefish or dwarf scorpionfish, a venomous fish species
See also Nana (disambiguation)