Travel Notes lists URLs of newspapers by country and US state
http://www.actualidad.com/ lists newspapers by continent and country
Allnewspapers.com/ claims to be "the leading Media Directory on the Internet. We offer links to Newspapers, Magazines, News Agencies, Radio and TV Stations, Web Cams, Classified Ads, and Latest News. In addition, our Worldwide Directory offers links to more than 2.5 million sites."
The Internet Public Library includes a page listing newspapers accoording to continent and coutnry
Escape Artist.com offers lists of newspapers and other media for each region of the world
http://www.zen.co.uk/wrx/alltnews.htm gives access to a listing of British newspapers and media while its related site http://www.zen.co.uk/wrx/open2.htm allows intensive searches of a very large variety of sources.
The University of Kentucky offers a listing of News Resources for Current Events, where you can find a very intelligent guide to resources for topics currently in the news, and a fine list of news sources.