| African Population Health & Research Center IncBaltimore | Form 990 | $39,510,486FY2024 |
| Institute for Operations Research and the Management SciencesCatonsville | Form 990 | $19,741,544FY2025 |
| CPWR the Center for Construction Research and TrainingSilver Spring | Form 990 | $18,723,168FY2025 |
| National Council for the Social StudiesSilver Spring | Form 990 | $3,668,509FY2025 |
| Rockville Institute a Research Institute for the Advancement of SRockville | Form 990 | $2,428,193FY2024 |
| Maryland Center on Economic Policy IncBaltimore | Form 990 | $892,319FY2024 |
| Parkview Institute IncBethesda | Form 990 | $827,859FY2025 |
| National Postdoctoral AssoicationRockville | Form 990 | $785,235FY2025 |
| Coalition for Evidence-Based Policy IncBethesda | Form 990 | $741,434FY2025 |
| National Womens Studies Association University of MarylandBaltimore | Form 990 | $711,390FY2024 |
| Society for in Vitro Biology IncorporatedMillersville | Form 990 | $618,212FY2025 |
| The Society for the Advancement of Socio-EconomicsTimonium | Form 990 | $557,929FY2024 |
| 1789 FundChestertown | Form 990 | $275,664FY2025 |
| Association for Safe International Road Travel IncPotomac | Form 990-EZ | $189,415FY2025 |
| College of Workers Compensationlawyers IncAnnapolis | Form 990-EZ | $135,250FY2024 |
| North American Society for the Sociology of SportCollege Park | Form 990-EZ | $132,922FY2024 |
| I Am Underdog IncOwings Mills | Form 990-EZ | $101,804FY2025 |
| RESEARCH4IMPACT IncBaltimore | Form 990-EZ | $53,000FY2025 |
| Center for Human ServicesBethesda | Form 990-N | No figure |
| Society for Behavioral and Cognitive NeurologyBaltimore | Form 990-N | No figure |
| Community-Academic Consortium for Research on Alternative SexualitieCollege Park | Form 990-N | No figure |
| Isolon-Org IncSeverna Park | Form 990-N | No figure |
| Center for Ethnic ResearchChurchton | Form 990-N | No figure |
| Center for Health Intelligence and Policy IncBaltimore | Form 990-N | No figure |
| Chiling IncGreenbelt | Form 990-N | No figure |
| Maryland Council for Social StudiesMount Airy | Form 990-N | No figure |
| Association for the Advancement of African Women EconomistsGermantown | Form 990-N | No figure |
| Center for Teaching the Rule of Law IncFrederick | Form 990-N | No figure |
| Friends of Aspen Germany IncPotomac | Form 990-N | No figure |
| Consortium on Competitiveness and Cooperation IncBaltimore | Form 990-N | No figure |
| Foundation of Economic TrendsBethesda | Form 990-N | No figure |
| National Council for Geocosmic Research IncBaltimore | Form 990-N | No figure |
| Assateague Peoples IncDelmar | Form 990-N | No figure |
| Forest Glen Commonwealth IncHagerstown | Form 990-N | No figure |
| World Council of Fisheries SocietiesBethesda | Form 990-N | No figure |
| Human Achievement Alliance IncRockville | Form 990-N | No figure |
| Clinicianfest IncUpper Marlboro | Form 990-N | No figure |
| Association of Black Researchers IncGlen Burnie | Form 990-N | No figure |
| Association of International Dynamic Educators IncBowie | Form 990-N | No figure |
| Lead and Environmental Hazards Association IncSilver Spring | Form 990-N | No figure |
| Keratoplasty Alliance International IncBaltimore | Form 990-N | No figure |
| Institute for Democracy and Development Polita IncSilver Spring | Form 990-N | No figure |
| Complete Wellness InstituteBaltimore | Form 990-N | No figure |
| Walker Beasley Public Policy ProjectMontgomery Village | None required | No figure |
| Morrison-Sankara Research Center LtdDavidsonville | Form 990-N | No figure |
| My Legacy Group IncorporationAccokeek | Form 990-N | No figure |
| Ground Truth Policy LabBaltimore | Form 990-N | No figure |
| Economic Research OrganizationBaltimore | Form 990-N | No figure |
| Easi EvidenceElkton | Form 990-N | No figure |
| I Am the AnswerGovans | Form 990-N | No figure |