San Gennaro (disambiguation)
San Gennaro usually refers to St Januarius, bishop of Naples.
San Gennaro may also refer to:
- Festival, Fair, or Feast of San Gennaro: September 19
 - San Gennaro, a grape
 - Cathedral of San Gennaro in Naples
 - San Gennaro extra Moenia ("San Gennaro-beyond-the-Walls"), a church in Naples
 - Royal Chapel of the Treasure of San Gennaro in Naples
 - Museum of the Treasure of San Gennaro in Naples
 - San Gennaro al Vomero, a church in Naples
 - San Gennaro all’Olmo, a former church in Naples
 - Catacombs of San Gennaro in Naples
 - Abbey of San Gennaro:
 - San Gennaro dei Poveri ("San Gennaro of the Poor"), a hospital in Naples
 - Porta San Gennaro ("San Gennaro Gate") in Naples
 - San Gennaro Vesuviano, a village near Naples
 - Order of San Gennaro, a knightly order headed by the titular King of Naples, a member of the Spanish royal family
 - Spanish ship San Gennaro (1765), a Spanish 86-gun ship of the line ceded to France, where it served as the Tourville
 
See also
- Januarius, the latinate form of the name
 - January, the anglicized form of the name
 - Gennaro, the italicized form of the name
 - Treasure of San Gennaro, an Italian comedy
 - San Gennaro's Blood (San Gennaro Vére), a novel set in Naples
 
- "gennaro" also refers to the month January in italian