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First and last name national uniqueness statistics for the 25 countries or regions with the highest average percentage of last name in the country (2001-2021)_ A “national” first or last name is used only by researchers in one country_ A complete list of countries/regions is in the supplementary materi als (https://doi_org/10_6084/m9_figshare_21954467)_
| Country/region | Authors with a first name | % of national first names | Average % of first name in country | First name rank | Authors with a last name | % of national last names | Average % of last name in country | Last name rank |
|---|---|---|---|---|---|---|---|---|
| Thailand | 85,162 | 42% | 81% | 3 | 96,790 | 81% | 88% | 1 |
| Japan | 1,059,927 | 5% | 87% | 1 | 1,217,638 | 8% | 87% | 2 |
| Lithuania | 15,245 | 8% | 55% | 15 | 19,240 | 73% | 86% | 3 |
| China | 4,488,356 | 3% | 85% | 2 | 4,988,411 | 1% | 83% | 4 |
| Turkey | 217,560 | 6% | 75% | 4 | 255,292 | 26% | 80% | 5 |
| Russian Fed. | 137,269 | 4% | 41% | 31 | 452,961 | 29% | 77% | 6 |
| Iran | 277,009 | 4% | 66% | 7 | 350,691 | 23% | 76% | 7 |
| Laos | 1,179 | 60% | 72% | 5 | 1,370 | 65% | 75% | 8 |
| Kazakhstan | 18,780 | 24% | 59% | 14 | 27,596 | 57% | 74% | 9 |
| Indonesia | 98,259 | 20% | 53% | 17 | 121,959 | 35% | 72% | 10 |
| Greece | 71,132 | 5% | 50% | 19 | 101,776 | 38% | 72% | 11 |
| Madagascar | 2,084 | 25% | 37% | 38 | 2,950 | 48% | 71% | 12 |
| Poland | 163,794 | 3% | 63% | 10 | 199,191 | 33% | 71% | 13 |
| Czech Republic | 61,820 | 3% | 39% | 34 | 89,460 | 43% | 70% | 14 |
| India | 629,418 | 10% | 61% | 12 | 982,934 | 12% | 69% | 15 |
| Georgia | 3,615 | 5% | 31% | 56 | 6,628 | 36% | 69% | 16 |
| Latvia | 5,775 | 9% | 40% | 32 | 8,441 | 54% | 69% | 17 |
| Finland | 65,723 | 3% | 47% | 21 | 81,530 | 26% | 67% | 18 |
| Hungary | 47,033 | 8% | 62% | 11 | 59,104 | 24% | 65% | 19 |
| Slovakia | 24,042 | 3% | 24% | 81 | 33,917 | 46% | 65% | 20 |
| Mongolia | 2,335 | 38% | 65% | 9 | 3,101 | 37% | 65% | 21 |
| Uganda | 8,543 | 9% | 14% | 120 | 10,160 | 37% | 64% | 22 |
| Romania | 51,161 | 6% | 37% | 41 | 63,560 | 28% | 64% | 23 |
| Nigeria | 47,983 | 15% | 44% | 26 | 78,489 | 25% | 63% | 24 |
| South Korea | 514,026 | 5% | 69% | 6 | 556,771 | 1% | 63% | 25 |
First and last name national uniqueness statistics for the 25 countries or regions with the lowest average percentage of last name in the country/region_ A “national” first or last name is used only by researchers in one country_
| Country/region | Authors with a first name | % of national first names | Average % of first name in country | First name rank | Authors with a last name | % of national last names | Average % of last name in country | Last name rank |
|---|---|---|---|---|---|---|---|---|
| Virgin Islands (UK) | 26 | 0% | 2% | 191 | 36 | 8% | 11% | 176 |
| Paraguay | 1,683 | 2% | 3% | 186 | 1,990 | 5% | 10% | 177 |
| El Salvador | 814 | 1% | 2% | 192 | 947 | 5% | 10% | 178 |
| Andorra | 106 | 3% | 6% | 168 | 130 | 4% | 10% | 179 |
| Barbados | 357 | 3% | 6% | 170 | 436 | 6% | 10% | 180 |
| New Zealand | 50,477 | 2% | 5% | 175 | 63,946 | 4% | 10% | 181 |
| Guatemala | 1,968 | 2% | 4% | 182 | 2,199 | 6% | 10% | 182 |
| Hong Kong, China | 53,289 | 1% | 8% | 157 | 66,369 | 1% | 10% | 183 |
| Montserrat | 20 | 0% | 5% | 176 | 39 | 5% | 10% | 184 |
| Costa Rica | 6,122 | 2% | 5% | 178 | 6,996 | 2% | 9% | 185 |
| Falkland Islands | 69 | 0% | 0% | 199 | 88 | 6% | 9% | 186 |
| Grenada | 551 | 6% | 8% | 152 | 640 | 4% | 9% | 187 |
| Panama | 1,864 | 6% | 9% | 146 | 2,135 | 5% | 9% | 188 |
| Virgin Islands (USA) | 157 | 6% | 8% | 149 | 202 | 3% | 9% | 189 |
| Bahamas | 196 | 5% | 7% | 159 | 237 | 5% | 8% | 190 |
| Cayman Islands | 96 | 0% | 1% | 197 | 120 | 3% | 8% | 191 |
| Jamaica | 2,217 | 9% | 13% | 122 | 3,113 | 4% | 8% | 192 |
| Bermuda | 144 | 1% | 2% | 194 | 187 | 4% | 8% | 193 |
| Puerto Rico | 8,310 | 6% | 10% | 139 | 9,347 | 2% | 8% | 194 |
| Dominican Republic | 1,198 | 6% | 9% | 141 | 1,355 | 3% | 7% | 195 |
| Honduras | 1,175 | 3% | 5% | 173 | 1,345 | 3% | 6% | 196 |
| Nicaragua | 961 | 3% | 5% | 174 | 1,133 | 3% | 6% | 197 |
| Cape Verde | 247 | 8% | 11% | 133 | 279 | 3% | 6% | 198 |
| Dominica | 82 | 6% | 10% | 136 | 101 | 2% | 5% | 199 |
| Macao, China | 3,933 | 2% | 3% | 184 | 4,352 | 1% | 2% | 200 |