Rhestr gwledydd yn nhrefn eu poblogaeth
Oddi wrth Wicipedia, y gwyddoniadur rhydd.
Rhestr gwledydd yn ôl poblogaeth ydy hon. Mae'r ffigyrau yn dod o'r CIA World Factbook 2002 -- dydy nhw ddim bob amser yn gyfoes, ond mae nhw'n weddol agos.
Gweler hefyd: Rhestr gwledydd, Rhestr gwledydd yn ôl cyfandir
| Lle | Gwlad | Poblogaeth | 
| 1 |  Tsieina (Gweriniaeth Pobl Tseina) Priftir Tseina Hong Kong Macau Cyfanswm | 1,284,303,705 7,210,505 453,733 1,291,967,943 | 
| 2 |  India | 1,045,845,226 | 
| 3 |  Unol Daleithiau Samoa America Guam Ynysoedd Gogleddol y Marianas Puerto Rico Ynysoedd Virgin yr Unol Daleithiau Cyfanswm | 278,058,881 67,084 157,557 74,612 3,937,316 122,211 282,417,661 | 
| 4 |  Indonesia | 231,328,092 | 
| 5 |  Brasil | 176,029,560 | 
| 6 |  Pacistan | 147,663,429 | 
| 7 |  Rwsia | 144,978,573 | 
| 8 |  Bangladesh | 133,376,684 | 
| 9 |  Nigeria | 129,934,911 | 
| 10 |  Japan | 126,974,628 | 
| 11 |  México | 103,400,165 | 
| 12 |  Pilipinas | 84,525,639 | 
| 13 |  Yr Almaen | 83,251,851 | 
| 14 | Fietnam | 81,098,416 | 
| 15 | Yr Aifft | 70,712,345 | 
| 16 | Ethiopia | 67,673,031 | 
| 17 |  Twrci | 67,308,928 | 
| 18 |  Iran | 66,622,704 | 
| 19 |  Gwlad Thai | 62,354,402 | 
| 20 |  Prydain Fawr a Gogledd Iwerddon Anguilla Ynysoedd Virgin Prydeinig Bermuda Ynysoedd Cayman Ynysoedd y Falklands Gibraltar Guernsey Ynys Manaw Jersey Montserrat Ynys Pitcairn Saint Helena Ynys Turks a Caicos Cyfanswm | 59,778,002 12,132 20,812 63,503 35,527 2,826 27,649 64,342 73,489 89,361 7,574 47 7,266 18,122 60,070,440 | 
| 21 |  Ffrainc Giana Ffrangeg Polynesia Ffrangeg Guadeloupe Martinique Mayotte Caledonia Newydd Reunion Saint Pierre a Miquelon Wallis a Futuna Cyfanswm | 59,765,983 177,562 253,506 431,170 418,454 163,366 204,863 732,570 6,928 15,435 61,955,081 | 
| 22 |  Yr Eidal | 57,715,625 | 
| 23 | Gweriniaeth Ddemocrataidd Congo | 55,225,478 | 
| 24 |  Wcráin | 48,396,470 | 
| 25 | De Corea | 48,324,000 | 
| 26 |  De Affrica | 43,647,658 | 
| 27 | Myanmar | 42,238,224 | 
| 28 | Colombia | 41,008,227 | 
| 29 |  Sbaen | 40,077,100 | 
| 30 |  Gwlad Pwyl | 38,625,478 | 
| 31 | Yr Ariannin | 37,812,817 | 
| 32 | Tansania | 37,187,939 | 
| 33 | Swdan | 37,090,298 | 
| 34 | Algeria | 32,277,942 | 
| 35 |  Canada | 31,902,268 | 
| 36 | Morocco Sahara Gorllewinol Cyfanswm | 31,167,783 250,559 31,418,342 | 
| 37 | Kenya | 31,138,735 | 
| 38 | Periw | 27,949,639 | 
| 39 | Afghanistan | 27,755,775 | 
| 40 | Nepal | 25,873,917 | 
| 41 | Uzbekistan | 25,563,441 | 
| 42 | Iwganda | 24,699,073 | 
| 43 | Venezuela | 24,287,670 | 
| 44 | Irac | 24,001,816 | 
| 45 | Saudi Arabia | 23,513,330 | 
| 46 | Malaysia | 22,662,365 | 
| 47 | Taiwan, Gweriniaeth Tseina | 22,548,009 | 
| 48 | Gogledd Corea | 22,224,195 | 
| 49 | Romania | 21,698,181 | 
| 50 | Ghana | 20,244,154 | 
| 51 | Sri Lanka | 19,607,519 | 
| 52 | Moçambique | 19,576,783 | 
| 53 | Awstralia Ynys y Nadolig Ynysoedd Cocos Ynys Norfolk Cyfanswm | 19,546,792 2,771 633 1,879 19,552,075 | 
| 54 | Yemen | 18,701,257 | 
| 55 | Syria | 17,155,814 | 
| 56 | Côte d'Ivoire | 16,804,784 | 
| 57 | Kazakhstan | 16,741,519 | 
| 58 | Madagascar | 16,473,477 | 
| 59 | Yr Iseldiroedd Aruba Antiles yr Iseldiroedd Cyfanswm | 15,981,472 70,007 212,226 16,263,705 | 
| 60 | Camerŵn | 15,803,220 | 
| 61 | Chile | 15,328,467 | 
| 62 | Ecuador | 13,183,978 | 
| 63 | Guatemala | 12,974,361 | 
| 64 | Cambodia | 12,491,501 | 
| 65 | Burkina Faso | 12,272,289 | 
| 66 | Simbabwe | 11,365,366 | 
| 67 | Cuba | 11,184,023 | 
| 68 | Mali | 11,008,518 | 
| 70 | Groeg | 10,623,835 | 
| 71 | Serbia a Montenegro | 10,600,000 | 
| 71 | Malaŵi | 10,548,250 | 
| 72 | Angola | 10,366,031 | 
| 73 | Niger | 10,355,156 | 
| 74 | Belarws | 10,350,194 | 
| 75 | Senegal | 10,284,929 | 
| 76 | Y Weriniaeth Tsiec | 10,264,212 | 
| 77 | Gwlad Belg | 10,258,762 | 
| 78 | Hwngari | 10,106,017 | 
| 79 | Portiwgal | 10,066,253 | 
| 80 | Zambia | 9,770,199 | 
| 81 | Tunisia | 9,705,102 | 
| 82 | Sweden | 8,876,744 | 
| 83 | Tsiad | 8,707,078 | 
| 84 | Gweriniaeth Dominicaidd | 8,581,477 | 
| 85 | Bolifia | 8,300,463 | 
| 86 | Awstria | 8,150,835 | 
| 87 | Azerbaijan | 7,771,092 | 
| 88 | Bwlgaria | 7,707,495 | 
| 89 | Guinea | 7,613,870 | 
| 90 | Somalia | 7,488,773 | 
| 91 | Rwanda | 7,312,756 | 
| 92 | Y Swistir | 7,283,274 | 
| 93 | Haiti | 6,964,549 | 
| 94 | Benin | 6,590,782 | 
| 95 | Tajikistan | 6,578,681 | 
| 96 | Honduras | 6,406,052 | 
| 97 | El Salvador | 6,237,662 | 
| 98 | Bwrwndi | 6,223,897 | 
| 99 | Israel Llain Gaza Glan Orllewinol Cyfanswm | 5,938,093 1,178,119 2,090,713 9,206,925 | 
| 100 | Paraguay | 5,734,139 | 
| 101 | Laos | 5,635,967 | 
| 102 | Sierra Leone | 5,426,618 | 
| 103 | Slofacia | 5,414,937 | 
| 104 | Denmarc Y Lasynys Ynysoedd Faroe Cyfanswm | 5,368,854 56,352 45,661 5,454,828 | 
| 105 | Libia | 5,240,599 | 
| 106 |  Y Ffindir | 5,211,311 | 
| 107 | Iorddonen | 5,153,378 | 
| 108 | Togo | 5,153,088 | 
| 109 | Papua Guinea Newydd | 5,049,055 | 
| 110 | Georgia | 4,989,285 | 
| 111 | Nicaragua | 4,918,393 | 
| 112 | Kyrgyzstan | 4,753,003 | 
| 113 | Turkmenistan | 4,603,244 | 
| 114 |  Norwy | 4,525,116 | 
| 115 | Singapore | 4,452,732 | 
| 116 | Moldofa | 4,431,570 | 
| 117 |  Croatia | 4,334,142 | 
| 118 | Eritrea | 4,298,269 | 
| 119 | Bosnia a Herzegovina | 3,922,205 | 
| 120 | Seland Newydd Ynysoedd Cook Tokelau Cyfanswm | 3,864,129 20,611 1,445 3,886,185 | 
| 121 |  Iwerddon | 3,840,838 | 
| 122 | Costa Rica | 3,773,057 | 
| 123 | Libanus | 3,627,774 | 
| 124 |  Lithuania | 3,610,535 | 
| 125 | Gweriniaeth Canol Affrica | 3,576,884 | 
| 126 | Albania | 3,510,484 | 
| 127 | Uruguay | 3,360,105 | 
| 128 | Armenia | 3,336,100 | 
| 129 | Liberia | 3,225,837 | 
| 130 | Gweriniaeth y Congo | 2,894,336 | 
| 131 | Panama | 2,845,647 | 
| 132 | Mauritania | 2,747,312 | 
| 133 | Jamaica | 2,665,636 | 
| 134 | Mongolia | 2,654,999 | 
| 135 | Oman | 2,622,198 | 
| 136 | Emiriaethau Arabaidd Unedig | 2,407,460 | 
| 137 | Latfia | 2,385,231 | 
| 138 | Lesotho | 2,177,062 | 
| 139 | Bhutan | 2,049,412 | 
| 140 | Macedonia | 2,046,209 | 
| 141 | Kuwait | 2,041,961 | 
| 142 | Slofenia | 1,930,132 | 
| 143 | Namibia | 1,797,677 | 
| 144 | Botswana | 1,586,119 | 
| 145 | Estonia | 1,415,681 | 
| 146 | Y Gambia | 1,411,205 | 
| 147 | Guinea-Bissau | 1,315,822 | 
| 148 | Gabon | 1,221,175 | 
| 149 | Mauritius | 1,189,825 | 
| 150 | Trinidad a Tobago | 1,169,682 | 
| 151 | Gwlad Swasi | 1,104,343 | 
| 152 | Fiji | 844,330 | 
| 153 | Dwyrain Timor | 800,000 | 
| 154 | Qatar | 769,152 | 
| 155 | Cyprus | 762,887 | 
| 156 | Guyana | 697,181 | 
| 157 | Bahrain | 645,361 | 
| 158 | Comoros | 596,202 | 
| 159 | Equatorial Guinea | 486,060 | 
| 160 | Ynysoedd y Solomons | 480,442 | 
| 161 | Djibouti | 460,700 | 
| 162 | Lwcsembwrg | 442,972 | 
| 163 | Suriname | 433,998 | 
| 164 | Cape Verde | 405,163 | 
| 165 | Malta | 394,583 | 
| 166 | Brunei | 343,653 | 
| 167 | Maldives | 310,764 | 
| 168 | Y Bahamas | 297,852 | 
| 169 | Gwlad yr Iâ | 279,384 | 
| 170 | Barbados | 275,330 | 
| 171 | Belize | 256,062 | 
| 172 | Vanuatu | 192,910 | 
| 173 | Samoa | 179,058 | 
| 174 | São Tomé a Principé | 165,034 | 
| 175 | Saint Lucia | 158,178 | 
| 176 | Taleithiau Ffederal Micronesia | 134,597 | 
| 177 | Saint Vincent a'r Grenadines | 115,942 | 
| 178 | Tonga | 104,227 | 
| 179 | Kiribati | 94,149 | 
| 180 | Grenada | 89,227 | 
| 181 | Seychelles | 80,098 | 
| 182 | Ynysoedd Marshall | 70,822 | 
| 183 | Dominica | 70,786 | 
| 184 | Andorra | 67,627 | 
| 185 | Antigua a Barbuda | 66,970 | 
| 186 | Saint Kitts a Nevis | 38,756 | 
| 187 | Liechtenstein | 32,528 | 
| 188 | Monaco | 31,842 | 
| 189 | San Marino | 27,336 | 
| 190 | Palau | 19,092 | 
| 191 | Nauru | 12,088 | 
| 192 | Tuvalu | 10,991 | 
| 193 | Niue | 2,124 | 
| 194 | Dinas y Fatican | 890 | 


