• CDC (Center for Disease Control) Data & Statistics
• Aswath Damodaran's Financial Data Page look at and download a number of data sets that you might find useful in corporate finance and valuation
• FedStats provides access to the full range of official statistical information produced by the US Federal Government without having to know in advance which Federal agency produces which particular statistic
• http://www.data.gov/ Data.gov provides descriptions of the US Federal datasets (metadata), information about how to access the datasets, and tools that leverage government datasets. The data catalogs will continue to grow as datasets are added. Federal, Executive Branch data are included in the first version of Data.gov.
• http://theinfo.org "A site for large data sets and the people who love them: the scrapers and crawlers who collect them, the academics and geeks who process them, the designers and artists who visualize them. It's a place where they can exchange tips and tricks, develop and share tools together, and begin to integrate their particular projects."
• LIS Cross-National Data Center LIS, formerly known as The Luxembourg Income Study, is a data archive and research center dedicated to cross-national analysis and home to two databases, the Luxembourg Income Study Database, and the Luxembourg Wealth Study Database.
• Amazon Public Data Sets Public Data Sets on AWS provides a centralized repository of public data sets that can be seamlessly integrated into AWS cloud-based applications.
• Google Public Data Aims to make "large datasets easy to explore, visualize and communicate
• CKAN The Data Hub "a community-run catalogue of useful sets of data on the Internet. You can collect links here to data from around the web for yourself and others to use, or search for data that others have collected. Depending on the type of data (and its conditions of use), the Data Hub may also be able to store a copy of the data or host it in a database, and provide some basic visualisation tools"
• ASEAN (Association of Southeast Asian Nations)Statistics Includes tourism and trade statistics for its ten member states
• Internet Crossroads in Social Science Data DISC's Internet Crossroads contains over 950 annotated links to data-related resources on the Internet.
• OFFSTATS: Official Statistics on the Web free statistics from official sources on the web, most but not all open access 
• UN/ECE links to official statistical organizations
• Statistical Sites on the World Wide Web guide from the US Bureau of Labor Statistics
• United Nations Statistics Division
• UN/ECE Database of International Statistical Activities