from http://www.photius.com/rankings/national_iq_scores_country_ranks.html
The intelligence scores came from work carried out earlier this decade by Richard Lynn, a British psychologist, and Tatu Vanhanen, a Finnish political scientist, who analysed IQ studies from 113 countries, and from subsequent work by Jelte Wicherts, a Dutch psychologist.
Rank..Country.. IQ
1 Singapore 108
2 South Korea 106
3 Japan 105
3 China 105
4 Italy 102
5 Iceland 101
5 Mongolia 101
6 Switzerland 101
7 Austria 100
7 Luxembourg 100
7 Netherlands 100
7 Norway 100
7 United Kingdom 100
8 Belgium 99
8 Canada 99
8 Estonia 99
8 Finland 99
8 Germany 99
8 New Zealand 99
8 Poland 99
8 Sweden 99
9 Andorra 98
9 Australia 98
9 Czech Republic 98
9 Denmark 98
9 France 98
9 Hungary 98
9 Latvia 98
9 Spain 98
9 United States 98
10 Belarus 97
10 Malta 97
10 Russia 97
10 Ukraine 97
11 Moldova 96
11 Slovakia 96
11 Slovenia 96
11 Uruguay 96
12 Israel 95
12 Portugal 95
13 Armenia 94
13 Georgia 94
13 Kazakhstan 94
13 Romania 94
13 Vietnam 94
14 Argentina 93
14 Bulgaria 93
15 Greece 92
15 Ireland 92
15 Malaysia 92
16 Brunei 91
16 Cambodia 91
16 Cyprus 91
16 Macedonia 91
16 Lithuania 91
16 Sierra Leone 91
16 Thailand 91
17 Albania 90
17 Bosnia and Herzegovina 90
17 Chile 90
17 Croatia 90
17 Kyrgyzstan 90
17 Turkey 90
18 Cook Islands 89
18 Costa Rica 89
18 Laos 89
18 Mauritius 89
18 Serbia 89
18 Suriname 89
19 Ecuador 88
19 Mexico 88
19 Samoa 88
20 Azerbaijan 87
20 Bolivia 87
20 Brazil 87
20 Guyana 87
20 Indonesia 87
20 Iraq 87
20 Myanmar (Burma) 87
20 Tajikistan 87
20 Turkmenistan 87
20 Uzbekistan 87
21 Kuwait 86
21 Philippines 86
21 Seychelles 86
21 Tonga 86
22 Cuba 85
22 Eritrea 85
22 Fiji 85
22 Kiribati 85
22 Peru 85
22 Trinidad and Tobago 85
22 Yemen 85
23 Afghanistan 84
23 Bahamas, The 84
23 Belize 84
23 Colombia 84
23 Iran 84
23 Jordan 84
23 Marshall Islands 84
23 Micronesia, Federated States of 84
23 Morocco 84
23 Nigeria 84
23 Pakistan 84
23 Panama 84
23 Paraguay 84
23 Saudi Arabia 84
23 Solomon Islands 84
23 Uganda 84
23 United Arab Emirates 84
23 Vanuatu 84
23 Venezuela 84
24 Algeria 83
24 Bahrain 83
24 Libya 83
24 Oman 83
24 Papua New Guinea 83
24 Syria 83
24 Tunisia 83
25 Bangladesh 82
25 Dominican Republic 82
25 India 82
25 Lebanon 82
25 Madagascar 82
25 Zimbabwe 82
26 Egypt 81
26 Honduras 81
26 Maldives 81
26 Nicaragua 81
27 Barbados 80
27 Bhutan 80
27 El Salvador 80
27 Kenya 80
28 Guatemala 79
28 Sri Lanka 79
28 Zambia 79
29 Congo, Democratic Republic of the 78
29 Nepal 78
29 Qatar 78
30 Comoros 77
30 South Africa 77
31 Cape Verde 76
31 Congo, Republic of the 76
31 Mauritania 76
31 Senegal 76
32 Mali 74
32 Namibia 74
33 Ghana 73
34 Tanzania 72
35 Central African Republic 71
35 Grenada 71
35 Jamaica 71
35 Saint Vincent and the Grenadines 71
35 Sudan 71
36 Antigua and Barbuda 70
36 Benin 70
36 Botswana 70
36 Rwanda 70
36 Togo 70
37 Burundi 69
37 Cote d'Ivoire 69
37 Ethiopia 69
37 Malawi 69
37 Niger 69
38 Angola 68
38 Burkina Faso 68
38 Chad 68
38 Djibouti 68
38 Somalia 68
38 Swaziland 68
39 Dominica 67
39 Guinea 67
39 Guinea-Bissau 67
39 Haiti 67
39 Lesotho 67
39 Liberia 67
39 Saint Kitts and Nevis 67
39 Sao Tome and Principe 67
40 Gambia, The 66
41 Cameroon 64
41 Gabon 64
41 Mozambique 64
42 Saint Lucia 62
43 Equatorial Guinea 59
North Korea N/A