| CaJES | Canadian Journal of Earth Sciences | In English | → Earth sciences |
| CaJPh | Canadian Journal of Physics | In English | → Physics |
| CaJRS | Canadian Journal of Remote Sensing | In English | |
| CaJSS | Canadian Journal of Soil Science | In English | → Earth sciences |
| CAMP | Computational and Applied Mathematical Physics | In English | → Mathematics → Physics |
| CamRe | Cambridge Observatories Reprints | In English | → Astronomy |
| CANM | Communications in Applied Numerical Methods | In English | → Mathematics |
| CAP | Current Applied Physics | In English | → Physics |
| CapMi | Royal Observatory Cape Mimeogram | In English | → Astronomy |
| CarOB | Carter Observatory Wellington New Zealand Astronomical Bulletins | In English | → Astronomy |
| CarR | Caries Research | In English | → Medicine |
| CarRe | Carter Observatory Wellington New Zealand Reprints | In English | → Astronomy |
| CarRv | Catalysis Reviews | In English | → Chemistry |
| CAS | Cambridge Astrophysics Series | In English | → Astronomy |
| CASJ | Canadian Aeronautics and Space Journal | In English | → Astronomy → Spaceflight engineering, astronautics → 6297 |
| CASJQ | Canadian Aeronautics and Space Journal Quarter | In English | → Astronomy → Spaceflight engineering, astronautics → 6297 |
| CatL | Catalysis Letters | In English | → Chemistry |
| CBQ | Catholic Biblical Quarterly | In English | → Roman catholic church |
| CBR | Computers and Biomedical Research | In English | → Computer science → Biological sciences → Medicine |
| CCA | Cambridge Contemporary Astrophysics | In English | → Astronomy |
| CCPCE | Current Contents Physical, Chemical and Earth Sciences | In English | → Physics → Chemistry → Earth sciences |
| CdÉ | Chronique d'Égypte = CE | Chronique d'Égypte | In French |
In French | → Language, linguistics, literature → Geography, biography, history |
| CDT | Connaissance des Temps | In English | → Astronomy |
| CE | Chronique d'Égypte = CdÉ (look above) |
In French | → Language, linguistics, literature → Geography, biography, history |
| CEAB | Central European Astrophysical Bulletin | In English | → Astronomy |
| CEE | Computers and Electrical Engineering | In English | → Computer science → Electrical engineering |
| CEEJ | Canadian Electrical Engineering Journal | In English | → Electrical engineering |
| CEJ | Chemistry European Journal | In English | → Chemistry |
| CEJPh | Central European Journal of Physics | In English | → Physics |
| CeMDA | Celestial Mechanics and Dynamical Astronomy | In English | → Astronomy |
| CeMec | Celestial Mechanics | In English | → Astronomy |
| CEnTp | Engineering Thermophysics China | In English | → Thermodynamics → Engineering, technology |
| CEyeR | Current Eye Research | In English | → Biological sciences → Anatomy |
| CF | Computers and Fluids | In English | → Computer science → 532 |
| CFC | Cuadernos de Filologia clásica | In Spanish | → Philology |
| CG | Computers and Geosciences | In English | → Computer science → Earth sciences |
| CGDAM | Conformal Geometry and Dynamics of the American Mathematical Society | In English | → Mathematics |
| CGIP | Computer Graphics Image Processing | In English | → Computer science |
| ChA&A | Chinese Astronomy and Astrophysics | In English | → Astronomy |
| ChCom | Chemical Communications | In English | → Chemistry |
| ChEdu | Chemical Educator | In English | → Chemistry |
| ChEnC | Chemical Engineering Communications | In English | → Chemistry → Chemical technology |
| ChEnN | Chemical Engineering News | In English | → Chemistry → Chemical technology |
| ChEnS | Chemical Engineering Science | In English | → Chemistry → Chemical technology |
| ChGeo | Chemical Geology | In English | → Earth sciences |
| ChIEJ | Chinese Institute of Engineers Journal | In English | → Engineering, technology |
| CHJ | Conference of Historical Journals | In English | → Organizations and associations → History |
| ChJA | Chinese Journal of Aeronautics | In English | → Spaceflight engineering, astronautics → Aeronautics, aircraft |
| ChJAA | Chinese Journal of Astronomy and Astrophysics | In English | → Spaceflight engineering, astronautics → Astronomy |
| ChJCP | Chinese Journal of Chemical Physics | In English | → Physics → Chemistry |
| ChJG | Chinese Journal of Geophysics | In English | → Geophysics |
| ChJIR | Chinese Journal of Infrared Research | In English | → Optics |
| ChJL | Chinese Journal of Lasers | In English | → Optics |
| ChJNP | Chinese Journal of Nuclear Physics | In English | → Nuclear, atomic, and molecular physics |
| ChJPh | Chinese Journal of Physics | In English | → Physics |
| ChJPR | Chinese Journal of Polar Research | In English | → Earth sciences |
| ChJS | Chinese Journal of Semiconductors | In English | → Physics |
| ChJSS | Chinese Journal of Space Science | In English | → Astronomy → Spaceflight engineering, astronautics |
| ChPh | Chemical Physics | In English | → Chemistry → Physics |
| ChPhL | Chinese Physics Letter | In English | → Physics |
| ChPhy | Chinese Physics | In English | → Physics |
| ChSAJ | Chinese Society of Astronautics Journal | In English | → Astronomy → Spaceflight engineering, astronautics |
| ChSBu | Chinese Science Bulletin | In English | → Mathematics and natural sciences |
| ChSMJ | Chinese Society of Mechanical Engineers Journal | In English | → Mechanical engineering |
| ChSRv | Chemical Society Reviews | In English | → Chemistry |
| ChSST | Chinese Space Science Technology | In English | → Astronomy → Spaceflight engineering, astronautics |
| CiBAA | Circular of the British Astronomical Association | In English | → Astronomy |
| CIPSG | Canadian Information Processing Society Graphics Interface | In English | |
| CiSSV | Circolare Interna della Sezione Stelle Variabili dell'Unione Astrofili Italiani | In Italian | → Astronomy |
| CITM | Chubu Institute of Technology, Memoirs | In English | → Applied sciences, technology |
| CiUO | Circular of the Union Observatory Johannesburg | In English | → Astronomy |
| CJAS | Copenhagen Journal of Asian Studies | In English | → Language, linguistics, literature → Geography, biography, history |
| CJChE | Canadian Journal of Chemical Engineering | In English | → Chemical technology → Chemistry |
| CJECE | Canadian Journal of Electrical Computer Engineering | In English | → Computer science → Electrical engineering |
| CJLTP | Chinese Journal of Low Temperature Physics | In English | → Physics |
| CJMat | Canadian Journal of Mathematics | In English | → Mathematics |
| CJNE | Canadian Journal of Native Education | In English | → Education |
| CJPP | Canadian Journal of Physiology and Pharmacology | In English | → Physiology → Pharmacology, toxicology |
| ClDy | Climate Dynamics | In English | → Meteorology, climatology |
| CliPa | Climate of the Past | In English | → Meteorology, climatology |
| CliPD | Climate of the Past Discussions | In English | → Meteorology, climatology |
| CMAME | Computer Methods in Applied Mechanics and Engineering | In English | → Computer science → 531 → Mechanical engineering |
| CMDRG | Cislennye Metody v Dinamike Razrežennyh Gazov | In Russian | → Physics |
| CMMPh | Computational Mathematics and Mathematical Physics | In English | → Mathematics → Physics |
| CmpEn | Composites Engineering | In English | → Materials science |
| CmpMa | Composites Manufacturing | In English | → Materials science |
| CmpSt | Composite Structures | In English | → Materials science |
| CMT | Continuum Mechanics and Thermodynamics | In English | → 531 → Thermodynamics |
| CMwA | Computers and Mathematics with Applications | In English | → Computer science → Mathematics |
| CMWCI | Contributions from the Mount Wilson Observatory / Carnegie Institution of Washington | In English | → Astronomy |
| CNME | Communications in Numerical Methods in Engineering | In English | → Mathematics → Engineering, technology |
| CNSNS | Communications in Nonlinear Science and Numerical Simulations | In English | → Mathematics |
| COA | Computational Optimization and Applications | In English | |
| CoAlg | Communications in Algebra | In English | → Algebra |
| CoArm | Contributions from the Armagh Observatory | In English | → Astronomy |
| CoAsi | Contributions dell'Osservatorio Astrofisica dell'Universita di Padova in Asiago | In Italian | → Astronomy |
| CoASP | Comments on Astrophysics and Space Physics | In English | → Astronomy → Physics |
| CoAst | Communications in Asteroseismology | In English | → Astronomy → Seismology, earthquakes |
| CoAth | Contributions from the Research and Computing Center Academy of Sciences of Athens | In English | → Astronomy |
| CoBos | Contributions from the Bosscha Observervatory | In English | → Astronomy |
| CoBrn | Contributions of the Public Observatory and Planetarium in Brno | In English | → Astronomy |
| CoCam | Contributions from the Cambridge Observatory England | In English | → Astronomy |
| CoCoi | Comunicações do Observatório Astronómico da Universidade de Coimbra | In Portuguese | → Astronomy |
| CoCom | Control and Computers | In English | → Computer science |
| CoDAO | Contributions from the Dominion Astrophysical Observatory in Victoria | In English | → Astronomy |
| CoDDO | Communications from the David Dunlap Observatory | In English | → Astronomy |
| CoDun | Contributions from the Dunsink Observatory Dublin Ireland | In English | → Astronomy |
| CoFl | Combustion and Flame | In English | → Thermodynamics |
| CoFra | Consiglio Nazionale delle Ricerche Italia. Laboratorio di Astrofisica Frascati, Contributi | In Italian | → Astronomy |
| CoIAP | Contributions de l'Institut d'Astrophysique de Paris | In French | → Astronomy |
| CoIoa | Contributions from the Laboratory of Astronomy - University of Ioannina Greece | In English | → Astronomy |
| COIR | Clinical Oral Implants Research | In English | → Medicine |
| CoKit | Contributions from the Kitt Peak National Observatory | In English | → Astronomy |
| CoKon | Commmunications of the Konkoly Observatory Hungary | In English | → Astronomy |
| CoKwa | Contributions from the Kwasan and Hida Observatories University of Kyoto | In English | → Astronomy |
| CoKyo | Contributions from the Institute of Astrophysics and Kwasan Observatory Kyoto | In English | → Astronomy |
| CoLic | Contributions of Lick Observatory | In English | → Astronomy |
| ColJ | Colloid Journal | In English | → 5447 |
| CoLon | Communications of the University of London Observatory | In English | → Astronomy |
| CoLou | Contributions of the Louisiana State University Observatory Baton Rouge Louisiana | In English | → Astronomy |
| CoLPL | Communications of the Lunar and Planetary Laboratory | In English | → Astronomy |
| ColSu | Colloids and Surfaces | In English | → 5447 |
| ComAp | Comments on Astrophysics | In English | → Astronomy |
| CoMat | Compositio Mathematica | In Latin | → Mathematics |
| ComBr | Communication Broadcasting | In English | → Telecommunications |
| CoMcD | Contributions from the McDonald Observatory University of Texas Fort Davis | In English | → Astronomy |
| CoMil | Contributions dell'Osservatorio Astrononia di Milano-Merate | In Italian | → Astronomy |
| ComMP | Comments in Modern Physics | In English | → Physics |
| CoMP | Contributions to Mineralogy and Petrology | In English | → Mineralogy → Petrology |
| ComPh | Computers in Physics | In English | → Computer science → Physics |
| CompJ | The Computer Journal | In English | → Computer science |
| CompM | Computational Mechanics | In English | → 531 |
| Compo | Composites | In English | → Materials science |
| ComRv | (The) Communication Review | In English | → Telecommunications |
| ComSE | Computing Systems in Engineering | In English | → Computer science → Engineering, technology |
| ComSp | Commercial Space | In English | → Astronomy → Spaceflight engineering, astronautics |
| ComST | Composites Science Technology | In English | → Materials science |
| COMTR | COMSAT Technical Review | In English | → 645 → Spaceflight engineering, astronautics |
| ConCP | Contemporary Concepts in Physics | In English | → Physics |
| ConFP | Contemporary Fundamental Physics | In English | → Physics |
| CoNMx | Contributions of the Observatory of New Mexico State University Las Cruces New Mexico | In English | → Astronomy |
| ConPh | Contemporary Physics | In English | → Physics |
| ConSc | Connection Science | In English | → Mathematics and natural sciences |
| CoORB | Communications de l'Observatoire Royal de Belgique | In French | → Astronomy |
| CoOxf | Communications from the University Observatory Oxford | In English | → Astronomy |
| CoPDE | Communications in Partial Differential Equations | In English | → 5179 |
| CoPer | Contributions of Perkins Observatory | In English | → Astronomy |
| CoPhC | Computer Physics Communications | In English | → Computer science → Physics |
| CoPhR | Computer Physics Reports | In English | → Computer science → Physics |
| CoPP | Contributions to Plasma Physics | In English | → Plasma physics |
| CopRe | Copenhagen University Observatory Reprints | In English | → Astronomy |
| CoPri | Contributions from the Princeton University Observatory | In English | → Astronomy |
| CoRad | Communications from the Radcliffe Observatory | In English | → Astronomy |
| CorD | Córdoba-Durchmusterung | In German | → Astronomy |
| CoRHO | Contributions - University of Florida Rosemary Hill Observatory | In English | → Astronomy |
| CoROE | Communications from the Royal Observatory Edinburgh | In English | → Astronomy |
| CoRSE | Royal Society Edinburgh Communications Physical Sciences | In English | |
| CoRut | Contributions from the Rutherford Observatory of Columbia University New York | In English | → Astronomy |
| CoSka | Contributions of the Astronomical Observatory Skalnate Pleso | In English | → Astronomy |
| CoSkL | Contributions of the Astronomical Observatory Skalnate Pleso Letters | In English | → Astronomy |
| CoSkS | Contributions of the Astronomical Observatory Skalnate Pleso Supplement | In English | → Astronomy |
| CosRe | Cosmic Research | In English | → Astronomy |
| CoSSC | Communication in Statistics - Simulation and Computation | In English | |
| CosSe | Cosmic Search Summer | In English | → Astronomy |
| CoStA | Communications from the University Observatory St-Andrews | In English | → Astronomy |
| CoSte | Contributions - University of Arizona Steward Observatory | In English | → Astronomy |
| CoSTM | Communication in Statistics - Theory and Methods | In English | |
| CoStr | Computers and Structures | In English | → Computer science |
| CoThe | Contributions from the Astronomical Department of the University of Thessaloniki | In English | → Astronomy |
| CoTok | Contributions from the Department of Astronomy University of Tokyo | In English | → Astronomy |
| CoTol | Contributions from the Cerro Tololo Inter-American Observatory | In English | → Astronomy |
| CoTPh | Communications in Theoretical Physics | In English | → Physics |
| CoUCL | Contributions de l'Universite Catholique de Louvain | In French | → Roman catholic church → Higher education, universities |
| CoVar | Complex Variables | In English | → Mathematics |
| CoVVO | Contributions of the Van Vleck Observatory | In English | → Astronomy |
| CoWas | Contributions from the Washburn Observatory of the University of Wisconsin | In English | → Astronomy |
| CoWat | Contributions of the University of Waterloo Observatory | In English | → Astronomy |
| CoWro | Contributions from the Wroclaw Astronomical Observatory | In English | → Astronomy |
| CPAM | Communications in Pure Applied Mathematics | In English | → Mathematics |
| CPC | Combinatorics, Probability and Computing | In English | → Mathematics → Computer science |
| CPCar | Chemistry and Physics of Carbon | In English | → Physics → Chemistry |
| CPH | Centre de Physique des Houches | In French | → Physics |
| CPh | Classical Philology | In English | → Philology |
| CPhy | Communications on Physics | In English | → Physics |
| CPL | Chemical Physics Letters | In English | → Chemistry → Physics |
| CPLip | Chemistry and Physics of Lipids | In English | → Physics → Chemistry |
| CPMCM | Commentationes Physico-Mathematicae et Chemico-Medicae | In Latin | → Mathematics → Physics → Chemistry → Medicine |
| CPPM | Clinical Physics and Physiological Measurement | In English | → Medicine |
| CPR | Chemical Physics Reports | In English | → Chemistry → Physics |
| CPSS | Chemical Physics of Solid Surfaces | In English | → Chemistry → Physics |
| CPSSH | Chemical Physics of Solid Surfaces and Heterogeneous Catalysis | In English | → Chemistry → Physics |
| CQ | Classical Quarterly | In English | |
| CQGra | Classical and Quantum Gravity | In English | → Astronomy → Physics |
| CQGrS | Classical and Quantum Gravity Supplement | In English | → Astronomy → Physics |
| CR | Classical Review | In English | |
| CRABS | Comptes-Rendus de l'Académie Bulgare des Sciences | In French | → Mathematics and natural sciences |
| CRAI | Comptes-rendus de l'Académie des Inscriptions et Belles-Lettres | In French | |
| CraRe | Cracow Observatory Reprints | In English | → Astronomy |
| CRIPEL | Cahiers de Recherches de l'Institut de Papyrologie et d'Égyptologie de Lille | In French | → Language, linguistics, literature → Geography, biography, history |
| CRLJ | Communications Research Laboratory Journal | In English |
|