If you are looking for a map of Croatia mostly will depend of a type of travelers you are. Croatia is a small country and in many cases you won't need one above all if you are a part of organized travel trip where everything is already planned.
Things change if you are headed to Croatia by car, bus or by ferry from Italy. In these circumstances you will need a map, not any one but an appropriate travel map to help you move around the country.
Today the most private or rented vehicles are equipped with quality GPS maps that covers also Croatia. In case you need one I suggest Garmin GPS maps. They offer complete road coverage of Croatia with thousands of business listings and other points of interest.
I'm an old fashioned travelers and I like to have a good detailed map in front of me. Even if you have a good map, from my experience I suggest to follow the map but it's better to ask the locals (farmers, restaurant owners, postman, policeman) for confirmation, you are getting to right direction. Locals will be glad to help you!
To supply you with as much information as possible about Croatia I have added some maps that will help you understated the primary territorial subdivisions of the Republic of Croatia.
On above map you can notice principal cities in Croatia, starting from Zagreb (Croatia's capital), Split, the second Croatian city, the capital of Dalmatia. Dalmatia is subdivided in three areas, the Northern Dalmatia (Zadar is the capital), Central Dalmatia (Split city) and Southern Dalmatia (Dubrovnik as a capital).
On the north there is Istria peninsula (Pula is a capital) and Kvarner area (Rijeka is the biggest Croatian port). On the esteem est it's located Slavonija (the fertile plain) with Osijek city as the capital.
If you have intention to visit Croatia coming from Italy, you will find this ferry map very comprehensive to have a picture of all connections from Ancona, Pescara, Venice, Bari to Dubrovnik.
The only connection that has been cancelled is the ferry along the coast from Rijeka to Dubrovnik and back.
Above map of Croatia National Parks will be of a great help for all travelers looking for amazing natural beauties of my country.
Seven of them are situated directly on or in the vicinity of the coast, while the eighth National Park, Plitvice Lakes, is less than 200 km from the coast.