Funding agencies increasingly require the inclusion of a data management plan with grant proposals. Requirements can vary by funding agency and even by announcement within a particular agency. It's important to look at the requirements for your particular announcement when developing your data management plan. Templates for data management plans for these and other funders are available through DMPTool.
Some helpful resources from the NIH on developing your data management and sharing plan include:
NSF proposals must include a supplementary document of no more than two pages describing how the proposal will conform to the NSF policy on the dissemination and sharing of research needs. For the most up-to-date information, see the NSF's page on Preparing Your Data Management Plan.
Some NSF directorates, offices, divisions, and programs provide more specific guidance on the content of data management plans, including Biological Sciences, Computer and Information Sciences and Engineering, and Social, Behavioral, and Economic Sciences. General guidance can be found in the NSF Proposal & Award Policies & Procedures Guide.
American Heart Association - Open Science Policy
Department of Energy - Digital Research Data Management
Institute for Educational Sciences - Public Access to Data Resulting from IES Funded Grants
National Endowment for the Humanities - Data Management Plans for Digital Humanities
National Institutes of Health - Data Management and Sharing Policy
National Science Foundation - Dissemination and Sharing of Research Results