| Abbreviated Journal Title | ISSN | Total Cites | Impact factor | Immediacy Index | Articles | Cited Half-life |
| OBES RES | 1071-7323 | 5731 | 3.491 | 0 | 4.1 | |
| OBES SURG | 0960-8923 | 3924 | 3.723 | 0.56 | 257 | 3.2 |
| OBESITY | 1071-7323 | 88 | 0.16 | 187 | ||
| OBSERVATORY | 0029-7704 | 250 | 0.268 | 0.385 | 13 | >10.0 |
| OBSTET GYN CLIN N AM | 0889-8545 | 679 | 0.825 | 0.043 | 46 | 8.2 |
| OBSTET GYNECOL | 0029-7844 | 18473 | 3.813 | 1.452 | 186 | 8.7 |
| OBSTET GYNECOL SURV | 0029-7828 | 1682 | 3.329 | 0.282 | 39 | 7.2 |
| OCCUP ENVIRON MED | 1351-0711 | 4083 | 2.255 | 0.512 | 127 | 5.8 |
| OCCUP MED-OXFORD | 0962-7480 | 881 | 0.812 | 0.352 | 88 | 4.9 |
| OCEAN COAST MANAGE | 0964-5691 | 558 | 1.011 | 0.034 | 58 | 6.3 |
| OCEAN DYNAM | 1616-7341 | 193 | 1.165 | 0.116 | 43 | 3 |
| OCEAN ENG | 0029-8018 | 699 | 0.542 | 0.07 | 129 | 5.9 |
| OCEAN MODEL | 1463-5003 | 537 | 2.897 | 0.557 | 88 | 2.7 |
| OCEANOGR MAR BIOL | 0078-3218 | 1716 | 3.444 | 0.375 | 8 | >10.0 |
| OCEANOLOGIA | 0078-3234 | 241 | 0.87 | 0.021 | 47 | 4.5 |
| OCEANOLOGY+ | 0001-4370 | 392 | 0.1 | >10.0 | ||
| OCUL IMMUNOL INFLAMM | 0927-3948 | 318 | 0.832 | 0.067 | 60 | 5.2 |
| ODONATOLOGICA | 0375-0183 | 192 | 0.284 | 0.114 | 35 | >10.0 |
| OECOLOGIA | 0029-8549 | 21006 | 3.333 | 0.486 | 296 | 9.6 |
| OFIOLITI | 0391-2612 | 192 | 0.71 | 0.125 | 16 | >10.0 |
| OHIO J SCI | 0030-0950 | 316 | 0.243 | 0.808 | 26 | >10.0 |
| OIKOS | 0030-1299 | 13863 | 3.381 | 0.462 | 234 | 8.5 |
| OIL GAS J | 0030-1388 | 497 | 0.034 | 0.011 | 550 | >10.0 |
| OIL GAS SCI TECHNOL | 1294-4475 | 205 | 0.356 | 0.069 | 58 | 4.5 |
| OIL GAS-EUR MAG | 0342-5622 | 51 | 0.186 | 0.036 | 28 | |
| OIL SHALE | 0208-189 | 147 | 0.371 | 0.067 | 30 | 5.2 |
| OLIGONUCLEOTIDES | 1545-4576 | 260 | 2.808 | 0.242 | 33 | 2.8 |
| OMEGA-INT J MANAGE S | 0305-0483 | 953 | 0.663 | 0.231 | 52 | 7.9 |
| OMICS | 1536-2310 | 315 | 2.056 | 0.694 | 49 | 3.1 |
| ONCOGENE | 0950-9232 | 51032 | 6.582 | 1.191 | 773 | 4.9 |
| ONCOL NURS FORUM | 0190-535 | 1955 | 1.475 | 0.157 | 70 | 7.6 |
| ONCOL REP | 1021-335 | 3323 | 1.567 | 0.233 | 446 | 3.4 |
| ONCOL RES | 0965-0407 | 925 | 1.475 | 0.133 | 30 | 8 |
| ONCOLOGIST | 1083-7159 | 2669 | 5.206 | 0.792 | 120 | 3.5 |
| ONCOLOGY-BASEL | 0030-2414 | 2244 | 2.252 | 0.163 | 49 | 4.3 |
| ONCOLOGY-NY | 0890-9091 | 1551 | 1.774 | 0.571 | 21 | 6.3 |
| ONDERSTEPOORT J VET | 0030-2465 | 809 | 0.465 | 0.167 | 42 | >10.0 |
| ONKOLOGIE | 0378-584 | 830 | 1.724 | 0.316 | 76 | 4 |
| ONLINE INFORM REV | 1468-4527 | 148 | 0.75 | 0.2 | 40 | 3.2 |
| OPEN SYST INF DYN | 1230-1612 | 151 | 1.033 | 0.263 | 38 | 3.1 |
| OPER DENT | 0361-7734 | 1719 | 1.449 | 0.039 | 103 | 5.6 |
| OPER RES | 0030-364 | 5124 | 1.234 | 0.195 | 82 | >10.0 |
| OPER RES LETT | 0167-6377 | 1090 | 0.767 | 0.16 | 94 | 9.2 |
| OPER TECHN SPORT MED | 1060-1872 | 114 | 0.167 | 0 | 35 | 6.4 |
| OPHELIA | 0078-5326 | 917 | 0.5 | 0 | >10.0 | |
| OPHTHAL EPIDEMIOL | 0928-6586 | 509 | 1.64 | 0.188 | 48 | 5.2 |
| OPHTHAL PHYSL OPT | 0275-5408 | 1354 | 1.483 | 0.236 | 72 | 8.8 |
| OPHTHAL PLAST RECONS | 0740-9303 | 1035 | 0.893 | 0.06 | 151 | 6.7 |
| OPHTHAL RES | 0030-3747 | 802 | 1.01 | 0.2 | 50 | 8.4 |
| OPHTHAL SURG LAS IM | 1542-8877 | 952 | 1.199 | 0.07 | 100 | 6.7 |
| OPHTHALMOLOGE | 0941-293 | 942 | 0.762 | 0.167 | 126 | 5.1 |
| OPHTHALMOLOGICA | 0030-3755 | 1170 | 1.051 | 0.151 | 73 | 9.2 |
| OPHTHALMOLOGY | 0161-6420 | 18195 | 4.031 | 0.785 | 326 | 7.8 |
| OPT APPL | 0078-5466 | 189 | 0.312 | 0.133 | 15 | 4.2 |
| OPT COMMUN | 0030-4018 | 12736 | 1.48 | 0.262 | 934 | 6.6 |
| OPT ENG | 0091-3286 | 5220 | 0.897 | 0.123 | 480 | 7.7 |
| OPT EXPRESS | 1094-4087 | 13321 | 4.009 | 0.642 | 1465 | 2.4 |
| OPT FIBER TECHNOL | 1068-5200 | 433 | 1.226 | 0.385 | 39 | 5.8 |
| OPT LASER ENG | 0143-8166 | 970 | 0.977 | 0.206 | 97 | 5.4 |
| OPT LASER TECHNOL | 0030-3992 | 747 | 0.653 | 0.198 | 91 | 5.6 |
| OPT LETT | 0146-9592 | 30335 | 3.598 | 0.778 | 1066 | 6.4 |
| OPT MATER | 0925-3467 | 2993 | 1.709 | 0.37 | 338 | 4.2 |
| OPT QUANT ELECTRON | 0306-8919 | 1030 | 0.644 | 0.123 | 57 | 8.2 |
| OPT REV | 1340-6000 | 430 | 0.576 | 0.055 | 73 | 5.8 |
| OPT SPECTROSC+ | 0030-400 | 2235 | 0.575 | 0.129 | 286 | >10.0 |
| OPTIK | 0030-4026 | 878 | 0.585 | 0.02 | 99 | >10.0 |
| OPTIM CONTR APPL MET | 0143-2087 | 130 | 0.6 | 0.056 | 18 | 10 |
| OPTIM ENG | 1389-4420 | 109 | 0.73 | 0.04 | 25 | 4.5 |
| OPTIM METHOD SOFTW | 1055-6788 | 317 | 0.563 | 0.161 | 56 | 6.3 |
| OPTIMIZATION | 0233-1934 | 377 | 0.5 | 0 | 39 | >10.0 |
| OPTO-ELECTRON REV | 1230-3402 | 226 | 0.617 | 0.149 | 47 | 3.8 |
| OPTOMETRY VISION SCI | 1040-5488 | 2160 | 1.371 | 0.301 | 113 | 7.8 |
| OR SPECTRUM | 0171-6468 | 329 | 1.224 | 0.125 | 32 | 6.5 |
| ORAL DIS | 1354-523 | 924 | 1.464 | 0.262 | 84 | 4.9 |
| ORAL MICROBIOL IMMUN | 0902-0055 | 1560 | 2.089 | 0.258 | 66 | 6.9 |
| ORAL ONCOL | 1368-8375 | 2219 | 2.103 | 0.3 | 130 | 5.1 |
| ORAL SURG ORAL MED O | 1079-2104 | 6602 | 1.221 | 0.11 | 227 | >10.0 |
| ORDER | 0167-8094 | 133 | 0.152 | 0 | 19 | >10.0 |
| ORE GEOL REV | 0169-1368 | 571 | 0.877 | 0.471 | 34 | 8.2 |
| ORG BIOMOL CHEM | 1477-0520 | 5334 | 2.874 | 0.777 | 538 | 2.4 |
| ORG DIVERS EVOL | 1439-6092 | 234 | 1.127 | 0.458 | 24 | 3.6 |
| ORG ELECTRON | 1566-1199 | 625 | 3.418 | 0.325 | 77 | 3.4 |
| ORG GEOCHEM | 0146-6380 | 5159 | 2.331 | 0.225 | 138 | 8.4 |
| ORG LETT | 1523-7060 | 33873 | 4.659 | 0.942 | 1526 | 3.5 |
| ORG PREP PROCED INT | 0030-4948 | 949 | 0.742 | 0.056 | 36 | >10.0 |
| ORG PROCESS RES DEV | 1083-6160 | 1756 | 2.004 | 0.36 | 161 | 3.9 |
| ORGANOMETALLICS | 0276-7333 | 31322 | 3.632 | 0.897 | 841 | 6.5 |
| ORIENT INSECTS | 0030-5316 | 141 | 0.308 | 0.056 | 36 | >10.0 |
| ORIGINS LIFE EVOL B | 0169-6149 | 1025 | 1.59 | 0.073 | 41 | 8.2 |
| ORL J OTO-RHINO-LARY | 0301-1569 | 737 | 0.704 | 0.258 | 66 | 7.2 |
| ORNIS FENNICA | 0030-5685 | 389 | 0.737 | 0.045 | 22 | >10.0 |
| ORNITOL NEOTROP | 1075-4377 | 137 | 0.26 | 0.062 | 64 | 4.1 |
| ORTHOP CLIN N AM | 0030-5898 | 2430 | 2.5 | 0.094 | 53 | >10.0 |
| ORTHOPADE | 0085-4530 | 973 | 0.707 | 0.083 | 121 | 6.3 |
| ORTHOPEDICS | 0147-7447 | 2084 | 0.583 | 0.086 | 187 | 8.8 |
| ORYX | 0030-6053 | 619 | 1.135 | 0.446 | 56 | 4.8 |
| OSAKA J MATH | 0030-6126 | 523 | 0.485 | 0.108 | 37 | >10.0 |
| OSIRIS | 0369-7827 | 157 | 0.385 | 0.333 | 12 | >10.0 |
| OSTEOARTHR CARTILAGE | 1063-4584 | 3761 | 4.017 | 0.529 | 170 | 4.5 |
| OSTEOPOROSIS INT | 0937-941 | 6867 | 3.718 | 0.638 | 210 | 5.6 |
| OSTRICH | 0030-6525 | 323 | 0.256 | 0.029 | 35 | >10.0 |
| OTOL NEUROTOL | 1531-7129 | 1330 | 1.339 | 0.159 | 176 | 3.6 |
| OTOLARYNG CLIN N AM | 0030-6665 | 1336 | 0.911 | 0.039 | 76 | 9.9 |
| OTOLARYNG HEAD NECK | 0194-5998 | 6046 | 1.338 | 0.16 | 406 | 7.6 |
| OUTLOOK AGR | 0030-7270 | 185 | 0.31 | 0 | 31 | >10.0 |
| OXFORD B ECON STAT | 0305-9049 | 855 | 0.722 | 0.195 | 41 | >10.0 |
| OXID COMMUN | 0209-4541 | 221 | 0.262 | 0.02 | 100 | 5.6 |
| OXID MET | 0030-770 | 1792 | 1.226 | 0.025 | 40 | >10.0 |
| OZONE-SCI ENG | 0191-9512 | 633 | 0.784 | 0.02 | 50 | 8.5 |