Japonica refers to things related to Japan.
- One of the SOE F Section networks during the Second World War
- Japonica Polonica Fantastica, a Polish manga publisher
- Bibliotheca Japonica, a collection that appeared between 1833 and 1841 assembled by Philipp Franz von Siebold
- Fauna Japonica, a series of monographs on the zoology of Japan
- Flora Japonica, a 1784 book by Carl Peter Thunberg
- Mathematica Japonica, a scientific journal
- Schistosomiasis japonica, a disease caused by the human blood fluke Schistosoma japonicum
- Terra Japonica, the Japan earth or catechu, a wood extract of several species of Acacia
Read more about Japonica: Taxonomy