Johannishus is a locality situated in Ronneby Municipality, Blekinge County, Sweden with 748 inhabitants in 2010.
[1] Johannishus castle is situated some kilometers north of locality.
There exist a school for 150 pupils and a library.
The club is recording and publishing information on the history of the localities Hjortsberga, Johannishus, Edestad, Förkärla and Listerby.
This article about a location in Blekinge County, Sweden is a stub.