The best maps of Kakadu National Park can be found on the site of the Department of the Environment and Heritage:
This version of the Kakadu Map is huge, so you can see absolutely everything by scrolling around.
It shows all the roads, tracks, driving distances, camp sites, boat ramps and more. Everything you could possibly ask for.
I made the link to the map open in a new window, so you can keep it open and always refer to the map of Kakadu as you browse my site to read more about it: Large Map Of Kakadu National Park
A smaller overview version with links to maps of the individual regions of Kakadu is here: Kakadu National Park Map
If you are looking for a physical map of Kakadu National Park that you can take with you on your trip I have good news. You don't need to buy one. The Department of Environment and Heritage also produces an excellent Visitor Guide to Kakadu National Park which is available for free at several places inside the park. Just grab one when you get here.
Don't want to wait? Download and print the Kakadu Visitor Guide here
The guide contains the Kakadu map you see above, and several even more detailed maps of all the different areas that make up Kakadu National Park.
If you need more detail because you are planning an overnight walking trip or similar, or if you want Kakadu maps or information sent to you you can email the Bowali Visitor Centre in Kakadu National Park.
I always try to source individual printable maps for you as well. I this case I found a printable map of Kakadu National Park that's produced by the same department. (Unfortunately it looks a bit outdated, doesn't give much detail, and I guess isn't really worth printing...)
Here is another printable Kakadu map that is part of a bigger document. In fact, it looks like a school worksheet or test... Anyway, the map of Kakadu is on page three and you can print it.
(Those maps are .pdf documents and you need Adobe Acrobat reader to view and print them. If it's not installed on your computer get it here for free.)
Kakadu National Park main page
Read about other National Parks in Australia