| Acronym | Meaning |
| SR-CCSD | Single Reference-CCSD |
| SRA | Society For Risk Analysis |
| SRA | Sudden Rotation Approximation |
| SRAM | Static Random Access Memory |
| SRAPW | Scalar Relativistic Augmented Plane Wave |
| SRASE | Symmetry Restricted Annihilation Of Single Excitations |
| SRB | Sulfate Reducing Bacteria |
| SRBC | Sheep Red Blood Cell |
| SRBSN | Sintered Reaction-bonded Silicon Nitride |
| SRC | Selective Reduction Catalysts (for Denitration) |
| SRC | Solvent-refined Coal |
| SRC | Submarine Reactor Compartments |
| SRC | Synchrotron Radiation Center |
| SRC-1 | Steroid Receptor Coactivator-1 |
| SRCC | Single-reference Coupled-cluster |
| SRCCSDT | Single-reference Coupled-cluster (with) Single (and) Double (and) Triple (excitations) |
| SRCD | Synchrotron Radiation Circular Dichroism |
| SRCI | Single-reference Configuration Interaction |
| SRD | Standard Reference Data |
| SRE | Serum-responsive Element |
| SREBP | Sterol Regulatory Element Binding Protein |
| SREL | Savannah River Ecology Laboratory |
| SRES | Special Report On Emission Scenario |
| SRET | Scanning Reference Electrode Technique |
| SRF | State Revolving Fund (module Of GICS) |
| SRF | Serum Response Factor |
| SRFA | Suwanee River Fulvic Acid |
| SRGO | Straight Run Gas Oils |
| SRGS | Stimulated Raman Gain Spectroscopy |
| SRH | Spin-adapted Reduced Hamiltonian |
| SRIM | Selected Research In Microfiche |
| SRIM | Stopping And Ranges Of Ions In Matter |
| SRIM | Structural Reaction Injection Molding |
| SRIXE | Synchrotron Radiation-induced X-ray Emission |
| SRLS | Stimulated Raman Loss Spectroscopy |
| SRM | Single Residue Method |
| SRM | Standard Reference Material |
| SRMCASE | Symmetry-restricted Multiconfiguration Annihilation Of Single Excitations Method |
| SRO | Short Range Order |
| SROS | Spin-restricted Open Shell |
| SRP | Signal Recognition Particle |
| SRP | Soluble Reactive Phosphorus |
| SRP | Spreading Resistance Profiling |
| SRPES | Synchrotron Radiation Photoelectron Spectroscopy |
| SRPL | Spatially Resolved Photoluminescence |
| SRPS | Synchrotron Radiation Photoelectron Spectroscopy |
| SRR | Standardized Relative Risk |
| SRS | Stimulated Raman Scattering |
| SRS | Surface Reflectance Spectroscopy |
| SRS | Symmetrized Rayleigh-Schroedinger (perturbation Theory) |