Paulinia is a city located in the state of São Paulo, Brazil. It serves as a regional center within the interior of the country.
The name Paulinia is also associated with biological taxonomy, specifically referring to a genus of grasshoppers in the South American subfamily Pauliniinae Hebard, 1923. This monotypic genus was originally erected by Blanchard in 1843 for the species Paulinia muscosa, which is now classified as Paulinia acuminata.