Posted opportunity — confirm at source
Mathematical Sciences Postdoctoral Research Fellowships (MSPRF)
U.S. National Science Foundation · 23-603
See source for award amount
2026-10-21-00-00-00
Confirm exact timezone in the announcement.Others (see text field entitled "Additional Information on Eligibility" for clarification)
Geographic eligibility and all attachment-specific conditions require review of the original announcement.
Eligibility details
*Who May Submit Proposals: Proposals may only be submitted by the following: -The Mathematical Sciences Postdoctoral Research Fellowships are awards to individuals, and proposals are submitted directly by the fellowship proposer to NSF. Fellows must affiliate with institutions or organizations (e.g., Institutions of Higher Education (IHEs), government and national laboratories and facilities, privately sponsored nonprofit institutes and museums, and for-profit organizations under certain conditions). *Who May Serve as PI: An individual is eligible to submit a proposal to this program if all the following criteria are met: Must, at the time of submission, be a U.S. citizen, U.S. national, or a legally admitted permanent resident alien of the United States; May not have held the doctoral degree more than 2 years as of January 1 of the year of the award; Must propose research in an area of mathematics or statistics; May not have previously been a principal investigator or co-principal investigator of an NSF award (other than a graduate research fellowship or an award in support of a conference or workshop); May not submit a research plan duplicated in another NSF proposal; Must not have previously been offered an award by the MSPRF program; and Must have a doctoral degree conferred before the postdoctoral appointment start date. Proposals that fail to meet the above eligibility requirements will be returned without review. By signing and submitting the proposal, the fellowship candidate is certifying that they meet the eligibility criteria specified in this program solicitation. Willful provision of false information in this request and its supporting documents or in reports required under an ensuing award is a criminal offense (U.S. Code, Title 18, Section 1001).
Matching funds & resources
Source matching-funds field: Not Required.
Matching funds and leveraged resources are different requirements. Read the description and reviewed rules below before determining resource commitments.
About this opportunity
The purpose of the Mathematical Sciences Postdoctoral Research Fellowships (MSPRF) is to support future leaders in mathematics and statistics by facilitating their participation in postdoctoral research environments that will have maximal impact on their future scientific development. There are two options for awardees: Research Fellowship and Research Instructorship. Awards will support research in areas of mathematics and statistics, including applications to other disciplines.
Funding geography: Not specified — review source. A funder’s address does not establish eligibility.
Review original source ↗Funding instrument: Grant. Issuing jurisdiction: Federal. This is not a geographic eligibility determination.
Source fields and evidence
id: 349280
Source ↗ · id
opportunityNumber: 23-603
Source ↗ · opportunityNumber
opportunityTitle: Mathematical Sciences Postdoctoral Research Fellowships (MSPRF)
Source ↗ · opportunityTitle
revision: 9
Source ↗ · revision
agencyDetails: {"code":"NSF","seed":"NSF","agencyName":"U.S. National Science Foundation","agencyCode":"NSF","topAgencyCode":"NSF"}
Source ↗ · agencyDetails
owningAgencyCode: NSF
Source ↗ · owningAgencyCode
cfdas: [{"id":412708,"opportunityId":349280,"cfdaNumber":"47.049","programTitle":"Mathematical and Physical Sciences"},{"id":412709,"opportunityId":349280}]
Source ↗ · cfdas
applicantTypes: [{"id":"25","description":"Others (see text field entitled \"Additional Information on Eligibility\" for clarification)"}]
Source ↗ · applicantTypes
applicantEligibilityDesc: *Who May Submit Proposals: Proposals may only be submitted by the following:
-The Mathematical Sciences Postdoctoral Research Fellowships are awards to individuals, and proposals are submitted directly by the fellowship proposer to NSF. Fellows must affiliate with institutions or organizations (e.g., Institutions of Higher Education (IHEs), government and national laboratories and facilities, privately sponsored nonprofit institutes and museums, and for-profit organizations under certain conditions). 
*Who May Serve as PI:
An individual is eligible to submit a proposal to this program if all the following criteria are met:
Must, at the time of submission, be a U.S. citizen, U.S. national, or a legally admitted permanent resident alien of the United States; 
May not have held the doctoral degree more than 2 years as of January 1 of the year of the award;
Must propose research in an area of mathematics or statistics;
May not have previously been a principal investigator or co-principal investigator of an NSF award (other than a graduate research fellowship or an award in support of a conference or workshop);
May not submit a research plan duplicated in another NSF proposal;
Must not have previously been offered an award by the MSPRF program; and
Must have a doctoral degree conferred before the postdoctoral appointment start date.
Proposals that fail to meet the above eligibility requirements will be returned without review.
By signing and submitting the proposal, the fellowship candidate is certifying that they meet the eligibility criteria specified in this program solicitation. Willful provision of false information in this request and its supporting documents or in reports required under an ensuing award is a criminal offense (U.S. Code, Title 18, Section 1001).
Source ↗ · applicantEligibilityDesc
fundingInstruments: [{"id":"G","description":"Grant"}]
Source ↗ · fundingInstruments
fundingActivityCategories: [{"id":"ST","description":"Science and Technology and other Research and Development"}]
Source ↗ · fundingActivityCategories
awardFloor: 190000
Source ↗ · awardFloor
awardCeiling: none
Source ↗ · awardCeiling
responseDate: Oct 21, 2026 12:00:00 AM EDT
Source ↗ · responseDate
responseDateStr: 2026-10-21-00-00-00
Source ↗ · responseDateStr
costSharing: false
Source ↗ · costSharing
lastUpdatedDate: Oct 05, 2026 10:08:27 AM EDT
Source ↗ · lastUpdatedDate
status: posted
Source ↗ · oppHits[id=349280].oppStatus
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