These are just some of the links that we have found for online or digital maps of France.  Most of these links are copyright and you should contact the appropriate web site owner if you intend to use them commercially.  Mapsworldwide's catalague of printed France maps is at Buy maps of France 

Our favourite France road atlas is France, Tourist & Motoring Atlas 2003: Atlas 1092

For topgraphic (large scale walking maps) go to IGN maps