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NSF Astronomy
Funding Policies and Philosophy
Summary of other NSF division policies from Jim Ulvestad:
From Physics Division, Program Solicitation 14-576: Limit on Number of Proposals per PI or Co-PI: None. However, the Physics Division strongly encourages single proposal submission for possible co-review rather than multiple submissions of proposals with slight differences to several.
From Division of Materials Research, top level web page: DMR discourages the submission across DMR's program of more than one proposal from the same Principal Investigator during the DMR Annual proposal-submission window each fall.
From Division of Chemistry, top level web page: CHE discourages the submission of more than one proposal from the same Principal Investigator during the proposal-submission window. Note that proposals that are a duplicate of, or substantially similar to, a proposal already under consideration by NSF from the same submitter are subject to return without review. This also applies to proposals that were previously reviewed and declined and have not been substantially revised as well as to duplicates of other proposals that were already awarded.
Math also claims to discourage multiple proposals.
RFP and Proposal structure and frequency
Selected Questions and Available Data