Distribution
Ratio of ABO blood type in the World
Data from Mr. NOMI's book. Sorted by B/A in ascending order.
| Country | O | A | B | AB | B/A |
| India | 31 | 21 | 40 | 8 | 1.90 |
| Thailand | 39 | 22 | 33 | 6 | 1.61 |
| Afganistan | 49 | 18 | 29 | 4 | 1.61 |
| Viet Nam | 43 | 22 | 30 | 5 | 1.36 |
| Myanmar | 35 | 25 | 32 | 8 | 1.29 |
| Pakistan | 34 | 25 | 31 | 10 | 1.24 |
| Iran | 36 | 28 | 28 | 8 | 1.00 |
| Kwait | 47 | 24 | 24 | 5 | 1.00 |
| Indonesia | 40 | 27 | 26 | 7 | 0.95 |
| Philippine | 45 | 26 | 24 | 5 | 0.92 |
| Iraq | 37 | 30 | 26 | 7 | 0.87 |
| Taiwan | 44 | 27 | 23 | 6 | 0.86 |
| Morocco | 42 | 29 | 23 | 7 | 0.79 |
| Egypt | 36 | 34 | 24 | 6 | 0.71 |
| Nepal | 30 | 37 | 24 | 9 | 0.65 |
| Japan | 31 | 38 | 22 | 9 | 0.57 |
| Czechoslovakia | 34 | 38 | 19 | 9 | 0.50 |
| Poland | 33 | 39 | 19 | 9 | 0.49 |
| Hungary | 30 | 42 | 19 | 9 | 0.45 |
| Israel | 36 | 41 | 17 | 6 | 0.41 |
| Romania | 26 | 47 | 19 | 8 | 0.40 |
| Finland | 37 | 46 | 17 | 6 | 0.37 |
| Colombia | 61 | 27 | 10 | 2 | 0.37 |
| Turkey | 32 | 43 | 16 | 7 | 0.37 |
| Greece | 43 | 39 | 13 | 5 | 0.33 |
| Blugaria | 32 | 45 | 15 | 8 | 0.33 |
| UK(Scotland) | 52 | 34 | 11 | 3 | 0.32 |
| Italy | 44 | 39 | 12 | 5 | 0.31 |
| Austria | 39 | 44 | 13 | 4 | 0.30 |
| USA | 46 | 40 | 11 | 4 | 0.28 |
| Australia | 48 | 39 | 10 | 3 | 0.26 |
| Brazil | 47 | 40 | 10 | 3 | 0.25 |
| Argentina | 47 | 40 | 10 | 3 | 0.25 |
| Lebanon | 36 | 47 | 12 | 5 | 0.25 |
| Denmark | 41 | 45 | 11 | 3 | 0.24 |
| Germany | 41 | 45 | 10 | 4 | 0.22 |
| Netherland | 45 | 43 | 9 | 3 | 0.21 |
| UK(England) | 47 | 42 | 8 | 3 | 0.19 |
| Belgium | 46 | 4 | 8 | 3 | 0.19 |
| Norway | 38 | 50 | 9 | 3 | 0.18 |
| Portugal | 41 | 48 | 8 | 3 | 0.17 |
| France | 46 | 44 | 7 | 3 | 0.16 |
| Spain | 44 | 46 | 7 | 3 | 0.15 |
| Sweden | 44 | 46 | 7 | 3 | 0.15 |
| Switzerland | 40 | 50 | 7 | 3 | 0.14 |
Last update: November 26, 1997.
E-mail: abofan@js2.so-net.ne.jp
