Croatian Cultural Association (National)
Croatia Times [In English]
The Dubrovnik Times (Dubrovnik)
Elektronicki Varazdin (Varazdin)
Glas Istre (Istra)
Hrvatska Biskupska Konoferencija
Javno (Zagreb)
Zadarski List (Zadar)
Stare hrvatske novine: portal digitaliziranih novina is a portal that provides access to Croatian HistoriNewspapers from the Natioanl and University Library of Zagreb and other Croatian heritage institutions. The collection begins in 1789 and continues throughout the late 20th century.
Relevant titles include:
Kroatischer Korrespondent (1789)
Il Regio Dalmata = Kraglski Dalmatin(1806-1810)
Novine horvatzke (1835) with its supplement: Danicza horvatzka
Danicza horvatzka, slavonzka y dalmatinzka (1835-1848)
Dom i sviet (1888-1919)
Primorac (1873-1878)
While these titles are a great starting point, the collection is extremely extensive, containing over 191,000 digitized newspapers (as of 8-9-2017).