• Radicalisation and gender · HORIZON-CL3-2024-FCT-01-04
• Rail – studies, works or mixed · CEF-T-2026-CORECOEN-RAIL-WORKS
• Rail – studies, works or mixed · CEF-T-2026-COREGEN-RAIL-WORKS
• RAISE Doctoral Networks for AI in Science (RAISE pilot) · HORIZON-RAISE-2026-01-03
• Raising awareness of and building capacity for the EU Charter of Fundamental Rights · CERV-2026-CHAR-LITI-CHARTER
• Raising citizen awareness on alternative proteins derived from biotechnology · HORIZON-CL6-2025-02-FARM2FORK-13
• RAMP Joint Transnational Call 2026 · CASCADE-14704
• Rare Earth and magnets innovation hubs (IA) · HORIZON-CL4-2024-RESILIENCE-01-08
• Re-imagining the creative economy: the interplay between the cultural and creative sectors and industries and the social economy · HORIZON-CL2-2027-01-HERITAGE-05
• Real time monitoring of regulated and non-regulated emissions from all types of vessels and other port activities in order to enforce emission limits in waterfront cities · HORIZON-CL5-2026-01-D5-17
• Real-time, adaptative and innovative energy management solutions to optimise fuel consumption and lower emissions pollutants in waterborne transport (ZEWT Partnership) · HORIZON-CL5-2025-04-D5-12
• Reconstructing areas affected by conflicts: the role of the bio-based solutions · HORIZON-CL6-2025-01-CIRCBIO-13
• Recruitment Cycle Cohort 2027 · CASCADE-16961
• Recruitment Cycle Cohort 2027 · CASCADE-16962
• Recruitment cycle Cohort 2027 · CASCADE-16981
• Recycling bio-based plastics increasing sorting and recycled content (upcycling). · HORIZON-JU-CBE-2023-IA-04
• Reducing pollution from the food and drink industries · HORIZON-CL6-2025-01-ZEROPOLLUTION-07
• Reducing soil sealing through sustainable urban and territorial design in the New European Bauhaus · HORIZON-NEB-2027-02-NEB-SOIL-01
• Regional (sea-basins) components of the EU Digital Twin Ocean · HORIZON-MISS-2026-03-OCEAN-05
• Regional Cable Hubs · DIGITAL-ECCC-2025-DEPLOY-CYBER-09-CABLEHUBS
• Regional Cable Hubs · DIGITAL-ECCC-2027-DEPLOY-CYBER-11-REGCABH
• Regional ecosystems of innovation to foster food system transformation · HORIZON-CL6-2024-GOVERNANCE-01-2
• REGIONAL RAIL SERVICES / INNOVATIVE RAIL SERVICES TO REVITALISE CAPILLARY LINES · HORIZON-JU-ER-2025-FA6-01
• Regulatory science to support translational development of patient-centred health technologies · HORIZON-HLTH-2026-01-IND-03
• Reinforcing EU autonomous access to space through EU-based spaceports · HORIZON-CL4-2026-SPACE-03-11
• Reinforcing skills in semiconductors · DIGITAL-2023-SKILLS-04-SEMICONDUCTORS
• Reinforcing synergies between experimentation spaces and innovation procurement · HORIZON-EIE-2027-01-CONNECT-02
• Reintroduction of landscape features in intensive agricultural areas · HORIZON-CL6-2024-BIODIV-01-7
• Reliability of age assessment methods in the context of security and border management · HORIZON-CL3-2026-01-BM-03
• Reliable data and practices to measure and calculate transport emissions in multimodal transport chains · HORIZON-CL5-2026-01-D6-09
• Reliable Services Operation · HORIZON-JU-SNS-2025-01-STREAM-B-04-02
• Remembering democratic transitions, the (re-)building of democratic institutions, and strengthening society based on the rule of law, democracy, and fundamental rights. · CERV-2026-CITIZENS-REM-TRANSITION
• RENEW-BOOSTER EUROCLUSTER CALL N°2 FOR FINANCIAL SUPPORT TO THIRD PARTIES · CASCADE-16041
• Renewable energy financing mechanism technology specific · RENEWFM-2026-INVEST-TECH-SPEC
• Renewable energy technology (RET) solutions in energy communities · HORIZON-CL5-2026-2-PRIZE
• Renewable Energy Valleys in Africa to increase energy security and energy access in Africa · HORIZON-CL5-2027-02-D3-10
• Renewable hydrogen used as feedstock in innovative production routes (Processes4Planet Partnership) (RIA) · HORIZON-CL4-2024-TWIN-TRANSITION-01-34
• Renovating the built environment through design for adaptability and disassembly. · HORIZON-NEB-2025-01-BUSINESS-01
• Replacing hazardous substances in biocidal products · HORIZON-CL6-2027-01-ZEROPOLLUTION-01
• Research and analysis of jurisprudence on international protection and registration in the EUAA Case Law Database (Asylum case law collection) · EUBA-EUAA-2026-ASYLUMCASELAW
• Research and innovation for food waste prevention and reduction at household level through measurement, monitoring and new technologies · HORIZON-CL6-2025-02-FARM2FORK-04-two-stage
• Research and Innovation Network for a Union of Equality · HORIZON-CL2-2026-01-DEMOCRACY-05
• Research and innovation to provide evidence that support reforms of research assessment · HORIZON-WIDERA-2025-06-ERA-03
• Research infrastructure concept development · HORIZON-INFRA-2024-DEV-01-01
• Research infrastructure concept development including major upgrades or extensions of existing infrastructures · HORIZON-INFRA-2026-DEV-01-01
• Research infrastructure services advancing frontier knowledge · HORIZON-INFRA-2025-01-SERV-03
• Research infrastructure services advancing frontier knowledge (bottom-up) · HORIZON-INFRA-2025-01-SERV-04
• Research infrastructure services to enable R&I addressing main challenges and EU priorities · HORIZON-INFRA-2025-01-SERV-02
• Research infrastructure services to enable R&I addressing main challenges and EU priorities related to the health domain · HORIZON-INFRA-2025-01-SERV-01
• Research infrastructures as accelerators of the integration of Ukraine in the European Research Area · HORIZON-INFRA-2026-DEV-01-05
• Research Management Facility · HORIZON-WIDERA-2026-04-WIDENING-01
• Research Support Framework for Situational Awareness on information integrity · DIGITAL-2026-BESTUSE-RSF-10-AWARENESS
• Research to help shape the future regulatory framework for a DES · HORIZON-SESAR-2025-DES-ER-03-WA2-1
• Research to rapidly evaluate interventions on Ebola outbreaks in sub-Saharan Africa · HORIZON-JU-GH-EDCTP3-2023-01-04
• Researching and applying the potential of Artificial Intelligence to foster climate resilience at the regional and local levels · HORIZON-MISS-2027-01-CLIMA-02
• Researching the technical, social & economic factors impacting the energy performance of Smart Buildings (Built4People Partnership) · HORIZON-CL5-2026-09-D4-01
• Resilient and secure urban planning and new tools for EU territorial entities · HORIZON-CL3-2024-INFRA-01-02
• RESIST II PROCESS INNOVATION OPEN CALL · CASCADE-14063
• RESIST II PRODUCT INNOVATION OPEN CALL · CASCADE-14062
• Resource assessment for deep sedimentary and basement reservoirs · HORIZON-CL5-2026-11-D3-06
• Resource Efficiency of PV in Production, Use and Disposal · HORIZON-CL5-2024-D3-02-07
• Restack Open Call (2027-01R) · CASCADE-17043
• Restoring Ocean and Waters in Regions · HORIZON-MISS-2025-03-OCEAN-04
• Restoring Ocean and Waters in waterfront Cities and their Ports · HORIZON-MISS-2025-03-OCEAN-05
• Restoring Ocean and Waters on Islands · HORIZON-MISS-2025-03-OCEAN-06
• Rethinking long-term care policy in the face of EU demographic shifts · HORIZON-CL2-2026-01-TRANSFO-09
• Rethinking sustainable competitiveness beyond traditional perspectives: role and contribution of the Social Economy · HORIZON-CL2-2027-01-TRANSFO-03
• Retrofitting of (bio)refineries industrial plants towards higher-value bio-based products · HORIZON-JU-CBE-2025-IAFlag-04
• Reverse local construction supply chains for the beautiful re-assembly of reclaimed construction products · HORIZON-NEB-2025-01-BUSINESS-03
• Revitalising neighbourhoods around existing railway and motorway corridors · HORIZON-NEB-2027-01-REGEN-03-CANCELLED
• RFCS-2025 Coal Accompanying Measures · RFCS-2025-01-AM
• RFCS-2025 Coal Pilot and Demonstration Projects · RFCS-2025-01-PDP
• RFCS-2025 Coal Research Projects · RFCS-2025-01-RPJ
• RFCS-2025 Steel Accompanying Measures · RFCS-2025-02-AM
• RFCS-2025 Steel Pilot and Demonstration Projects · RFCS-2025-02-PDP
• RFCS-2025 Steel Research Projects · RFCS-2025-02-RPJ
• RFCS-2026-01-AM Coal Accompanying measures · RFCS-2026-01-AM
• RFCS-2026-01-PDP Coal Pilot and demonstration projects · RFCS-2026-01-PDP
• RFCS-2026-01-RPJ Coal Research projects · RFCS-2026-01-RPJ
• RFCS-2026-02-AM Steel Accompanying measures · RFCS-2026-02-AM
• RFCS-2026-02-PDP Steel Pilot and demonstration projects · RFCS-2026-02-PDP
• RFCS-2026-02-RPJ Steel Research projects · RFCS-2026-02-RPJ
• RFCS-2026-Big Tickets-Coal · RFCS-2026-BT-Coal
• RFCS-2026-Steel-Big Tickets under the Clean Industrial Deal · RFCS-2026-BT-Steel-CID
• RFCS-2026-Steel-Big Tickets under the Steel and Metals Action Plan · RFCS-2026-BT-Steel-SMAP
• RFCS-2026-Steel-Big Tickets under the steel and metals action plan dual-use · RFCS-2026-BT-STEEL-SMAP-DUAL-USE
• RIA Global call according to SRIA 2026 · HORIZON-JU-CHIPS-2026-1-RIA
• RIA Resilience call reinforcing Europe's strength in 6G radio communication systems · HORIZON-JU-CHIPS-2026-2-RIA
• RISC-V Automotive Hardware Platform · HORIZON-JU-CHIPS-2025-IA-two-stage-FT1
• Rising Innovators category · HORIZON-EIC-2025-PRIZE-WIP-RisingInnovators
• Rising Innovators category · HORIZON-EIC-2026-PRIZE-WIP-RisingInnovators
• Risk Assessment in Eastern Eu · EUBA-EFSA-2025-BIOHAW-04-04-Lot4
• Risk Assessment in Western Eu · EUBA-EFSA-2025-BIOHAW-04-03-Lot3
• Risk Assessments in Northern Eu · EUBA-EFSA-2025-BIOHAW-04-01-Lot1
• Risk Assessments in Southern Eu · EUBA-EFSA-2025-BIOHAW-04-02-Lot2
• Risk management, mitigation and contingency for ESFRI/ERIC and other world-class research infrastructures · HORIZON-INFRA-2026-DEV-01-07
• Risk, robustness and resilience for autonomous vehicles in military operations · EDF-2025-LS-RA-SI-CYBER-3RAV-STEP
• Road Battery Electric Vehicles (BEV) optimised user-centric solutions for energy efficiency design and consistent range throughout weather conditions (2ZERO Partnership) · HORIZON-CL5-2025-04-D5-05
• Road Safety and resilience of rural areas · HORIZON-CL5-2026-10-D6-09
• Roadmap for next generation computing technologies from IoT device level to edge to cloud to HPC (CSA) · HORIZON-CL4-2025-03-DATA-10