| OSYRYS | On-board SYstems Relevant for hYbridization of Regional aircraftSOn-board SYstems Relevant for hYbridization of Regional aircraftS | signed | HORIZON | 2026 | €40.0M |
| OptoQuantTOP | Optical control over correlated topological quantum phases of matterOptical control over correlated topological quantum phases of matter | signed | HORIZON | 2026 | €2.4M |
| OPTiMiSE | Optimal Transport and Metric Structures for Evolution ProblemsOptimal Transport and Metric Structures for Evolution Problems | signed | HORIZON | 2026 | €2.2M |
| ODYSSEV | Optimised DYnamics of high voltage powertrains: developing Sustainable Systems for Electric VehiclesOptimised DYnamics of high voltage powertrains: developing Sustainable Systems for Electric Vehicles | signed | HORIZON | 2026 | €6.0M |
| Genovation | Orphan Genes as Drivers of Evolutionary Innovation in Microbial and Bacteriophage SystemsOrphan Genes as Drivers of Evolutionary Innovation in Microbial and Bacteriophage Systems | signed | HORIZON | 2026 | €1.5M |
| PALAI | PALimpsests: Artificial Intelligence applied to advanced imaging of recycled manuscripts from Northern Italy in the Early Middle Ages, to study their production and use within a sustainable ecologyPALimpsests: Artificial Intelligence applied to advanced imaging of recycled manuscripts from Northern Italy in the Early Middle Ages, to study their production and use within a sustainable ecology | signed | HORIZON | 2026 | €2.2M |
| PEMPIRE | PEM Electrolysis: Pushing towards significant Improvements Reaching Extended Performance and LifetimePEM Electrolysis: Pushing towards significant Improvements Reaching Extended Performance and Lifetime | signed | HORIZON | 2026 | €4.0M |
| PHYNEST | PHYsics for a greener world: fostering the NExt generation of talented young researchers in novel materials, innovative STrategies and energy solutionsPHYsics for a greener world: fostering the NExt generation of talented young researchers in novel materials, innovative STrategies and energy solutions | signed | HORIZON | 2026 | €4.0M |
| PAMELA | Papyri and Manuscripts: Exploring Layers of AgesPapyri and Manuscripts: Exploring Layers of Ages | signed | HORIZON | 2026 | €1.8M |
| PARAMLP | Parameterized Algorithms and PolyhedraParameterized Algorithms and Polyhedra | signed | HORIZON | 2026 | €1.5M |
| PAGENS | Pathways, Ages, Generation in Global North and SouthPathways, Ages, Generation in Global North and South | signed | HORIZON | 2026 | €1.7M |
| POPEYE | Peptidomimetic therapy to promote central Nervous System repairPeptidomimetic therapy to promote central Nervous System repair | signed | HORIZON | 2026 | €150,000 |
| PROXIE | Perceptual Realities: Optimizing XR through Perceptually-Informed ExperiencesPerceptual Realities: Optimizing XR through Perceptually-Informed Experiences | signed | HORIZON | 2026 | €1.5M |
| PREDICT-X-ACS | Personalised Risk Evaluation and Diagnosis in Cardiovascular Treatment for Acute Coronary SyndromePersonalised Risk Evaluation and Diagnosis in Cardiovascular Treatment for Acute Coronary Syndrome | signed | HORIZON | 2026 | €256,642.8 |
| PersonalRiskProfile | Personalized Genetic Risk Profile: A New Tool to Guide Prevention of Serious Mental IllnessPersonalized Genetic Risk Profile: A New Tool to Guide Prevention of Serious Mental Illness | signed | HORIZON | 2026 | €1.5M |
| PHOSCIL | Phase Separation and Oscillations in DNA Damage ResponsePhase Separation and Oscillations in DNA Damage Response | signed | HORIZON | 2026 | €1.5M |
| PURE-CO2 and NOx | Photo & electrochemical Urea production by Recycling Emissions of CO2 and NOx (PURE-CO2 and NOx): Deciphering Mechanistic Insights of Urea FormationPhoto & electrochemical Urea production by Recycling Emissions of CO2 and NOx (PURE-CO2 and NOx): Deciphering Mechanistic Insights of Urea Formation | signed | HORIZON | 2026 | €276,187.92 |
| PHOTONCHIP | Photonic Integrated Circuit for Single Emitter DetectionPhotonic Integrated Circuit for Single Emitter Detection | signed | HORIZON | 2026 | €150,000 |
| PL-LiDAR | Photonic Lantern-Based LiDAR systems for future climate-neutral and smart-citiesPhotonic Lantern-Based LiDAR systems for future climate-neutral and smart-cities | signed | HORIZON | 2026 | €190,219.44 |
| PhylFun | Phylogenetic taxonomy and classification of fungiPhylogenetic taxonomy and classification of fungi | signed | HORIZON | 2026 | €3.3M |
| PANIONS | Physics and Applications of Negative IONSPhysics and Applications of Negative IONS | signed | HORIZON | 2026 | €4.4M |
| PolaritonPixels | Pixelated polariton filters for multichannel hyperspectral lensless imagersPixelated polariton filters for multichannel hyperspectral lensless imagers | signed | HORIZON | 2026 | €150,000 |
| QYieldChip | Plasmonic microchip for absolute and calibration-free luminescence quantum yield measurementsPlasmonic microchip for absolute and calibration-free luminescence quantum yield measurements | signed | HORIZON | 2026 | €150,000 |
| REFLOWER | Polyesters Catalytic Chemical Recycling in Continuous Flow ReactorsPolyesters Catalytic Chemical Recycling in Continuous Flow Reactors | signed | HORIZON | 2026 | €193,643.28 |
| POLYBOTA | Polytheism and Botany: An Experimental Approach to the Environmental Dimensions of Ancient Greek ReligionPolytheism and Botany: An Experimental Approach to the Environmental Dimensions of Ancient Greek Religion | signed | HORIZON | 2026 | €1.5M |
| PROTEGE | Porous sensors for real-time monitoring of water quality risksPorous sensors for real-time monitoring of water quality risks | signed | HORIZON | 2026 | €150,000 |
| PosthumanMusic | Posthuman Music: Creative Practices after AI and Blockchain.Posthuman Music: Creative Practices after AI and Blockchain. | signed | HORIZON | 2026 | €2.5M |
| PINNSim | Power System Simulator based on Physics-Informed Neural NetworksPower System Simulator based on Physics-Informed Neural Networks | signed | HORIZON | 2026 | €150,000 |
| Th-MSR | Powering Tomorrow with the Next-Gen Thorium Molten Salt Reactors to Burn Nuclear WastePowering Tomorrow with the Next-Gen Thorium Molten Salt Reactors to Burn Nuclear Waste | signed | HORIZON | 2026 | €2.5M |
| PHARES | Powerplant Hybrid Application for REegional SegmentPowerplant Hybrid Application for REegional Segment | signed | HORIZON | 2026 | €69.0M |
| NetRewild | Predicting rewilding impacts on ecosystems through ecological interaction networksPredicting rewilding impacts on ecosystems through ecological interaction networks | signed | HORIZON | 2026 | €329,241.6 |
| PRIMA | Predicting the Regeneration of an Infarct by leveraging the Mechanobiology of AngiogenesisPredicting the Regeneration of an Infarct by leveraging the Mechanobiology of Angiogenesis | signed | HORIZON | 2026 | €1.5M |
| POST-PURPLE | Prevention, correction, and valorization of exhaust flows from urban photobiorefineriesPrevention, correction, and valorization of exhaust flows from urban photobiorefineries | signed | HORIZON | 2026 | €4.0M |
| Privacy4FMs | Privacy Protection and Auditing for Foundation ModelsPrivacy Protection and Auditing for Foundation Models | signed | HORIZON | 2026 | €1.5M |
| PROSA | Program-Specific AgentsProgram-Specific Agents | signed | HORIZON | 2026 | €150,000 |
| ProtoMan | Protocol for data-driven Manifold generation, validation, and utilization in high-fidelity combustion simulationsProtocol for data-driven Manifold generation, validation, and utilization in high-fidelity combustion simulations | signed | HORIZON | 2026 | €1.5M |
| POWER-Farm EU | Proving Offshore Wave EneRgy Farms in EuropeProving Offshore Wave EneRgy Farms in Europe | signed | HORIZON | 2026 | €19.0M |
| PrussBlueKion | Prussian Blue Analogues for K-ion batteriesPrussian Blue Analogues for K-ion batteries | signed | HORIZON | 2026 | €209,914.56 |
| PLANET | Pushing the Limit of Aerosol Nanoscale Engineering with Tiny nanoparticlesPushing the Limit of Aerosol Nanoscale Engineering with Tiny nanoparticles | signed | HORIZON | 2026 | €3.5M |
| PYRAH2 | Pyrolytic Renewable Approach for Hydrogen and Carbon Production: Efficient Transformation of Biogenic Wastes into Hydrogen and High-Value Solid Carbon for New Industrial Value ChainsPyrolytic Renewable Approach for Hydrogen and Carbon Production: Efficient Transformation of Biogenic Wastes into Hydrogen and High-Value Solid Carbon for New Industrial Value Chains | signed | HORIZON | 2026 | €8.0M |
| SYNDAM | Quality Control of Damaged Proteins at SynapsesQuality Control of Damaged Proteins at Synapses | signed | HORIZON | 2026 | €1.5M |
| AF-B-STEP | Quantifying Atrial Fibrillation Burden to inform Screening, Treatment, and hEalth PolicyQuantifying Atrial Fibrillation Burden to inform Screening, Treatment, and hEalth Policy | signed | HORIZON | 2026 | €8.2M |
| QFR | Quantifying Freedom: Data production and everyday life in the Liberated African village, 1807-1901Quantifying Freedom: Data production and everyday life in the Liberated African village, 1807-1901 | signed | HORIZON | 2026 | €276,187.92 |
| GoNiS | Quantifying nitrogen fixation by moss-cyanobacteria associations from community to global scale by developing a novel process-based modelling approachQuantifying nitrogen fixation by moss-cyanobacteria associations from community to global scale by developing a novel process-based modelling approach | signed | HORIZON | 2026 | €247,553.28 |
| QuaQuaMA | Quantitative Quantum Matter AnalysisQuantitative Quantum Matter Analysis | signed | HORIZON | 2026 | €1.5M |
| Re.HOT | Quantitative reflection holographic tomography for in-vivo analysis of biological specimens.Quantitative reflection holographic tomography for in-vivo analysis of biological specimens. | signed | HORIZON | 2026 | €1.5M |
| QUARTO | Quantum Annealing for Fluid Antenna MIMO SystemsQuantum Annealing for Fluid Antenna MIMO Systems | signed | HORIZON | 2026 | €150,000 |
| QCexplore | Quantum Chemical Exploration of Reaction Networks: From Origins of Life to De Novo Enzyme DesignQuantum Chemical Exploration of Reaction Networks: From Origins of Life to De Novo Enzyme Design | signed | HORIZON | 2026 | €2.5M |
| QuEST for APV | Quantum Enhanced Sensing with Trapped ions for Atomic Parity ViolationQuantum Enhanced Sensing with Trapped ions for Atomic Parity Violation | signed | HORIZON | 2026 | €2.0M |
| QuanG2 | Quantum Grenoble 2Quantum Grenoble 2 | signed | HORIZON | 2026 | €3.3M |