Olimpiade Musim Panas 2012
Penyelenggaraan > Negara peserta > Berdasarkan jumlah atlet

|  | Negara | Atlet |
| --- | --- | --- |
| GBR |  Britania Raya | 541 |
| USA |  Amerika Serikat | 530 |
| RUS |  Rusia | 436 |
| AUS |  Australia | 410 |
| GER |  Jerman | 392 |
| CHN |  Tiongkok | 380 |
| FRA |  Prancis | 330 |
| JPN |  Jepang | 293 |
| ITA |  Italia | 284 |
| ESP |  Spanyol | 282 |
| CAN |  Kanada | 277 |
| BRA |  Brasil | 258 |
| KOR |  Korea Selatan | 245 |
| UKR |  Ukraina | 237 |
| POL |  Polandia | 218 |
| NZL |  Selandia Baru | 184 |
| NED |  Belanda | 178 |
| BLR |  Belarus | 165 |
| HUN |  Hungaria | 157 |
| ARG |  Argentina | 137 |
| SWE |  Swedia | 134 |
| CZE |  Ceko | 133 |
| RSA |  Afrika Selatan | 125 |
| BEL |  Belgia | 115 |
| SRB |  Serbia | 115 |
| KAZ |  Kazakhstan | 114 |
| TUR |  Turki | 114 |
| DEN |  Denmark | 113 |
| EGY |  Mesir | 113 |
| CUB |  Kuba | 110 |
| CRO |  Kroasia | 108 |
| COL |  Kolombia | 104 |
| GRE |  Yunani | 104 |
| ROU |  Rumania | 103 |
| MEX |  Meksiko | 102 |
| SUI |  Swiss | 102 |
| IND |  India | 83 |
| TUN |  Tunisia | 83 |
| POR |  Portugal | 77 |
| AUT |  Austria | 70 |
| VEN |  Venezuela | 70 |
| MAR |  Maroko | 67 |
| IRL |  Irlandia | 66 |
| SLO |  Slovenia | 65 |
| NOR |  Norwegia | 64 |
| BUL |  Bulgaria | 63 |
| LTU |  Lituania | 62 |
| FIN |  Finlandia | 55 |
| NGR |  Nigeria | 55 |
| UZB |  Uzbekistan | 54 |
| AZE |  Azerbaijan | 53 |
| IRI |  Iran | 53 |
| PRK |  Korea Utara | 51 |
| JAM |  Jamaika | 50 |
| KEN |  Kenya | 47 |
| LAT |  Latvia | 46 |
| SVK |  Slowakia | 46 |
| TPE |  Tionghoa Taipei | 44 |
| ALG |  Aljazair | 42 |
| HKG |  Hong Kong | 42 |
| ISR |  Israel | 37 |
| THA |  Thailand | 37 |
| ECU |  Ekuador | 36 |
| CHI |  Chili | 35 |
| DOM |  Republik Dominika | 35 |
| ETH |  Etiopia | 35 |
| GEO |  Georgia | 35 |
| ANG |  Angola | 34 |
| CMR |  Kamerun | 33 |
| EST |  Estonia | 33 |
| MNE |  Montenegro | 33 |
| SEN |  Senegal | 31 |
| MAS |  Malaysia | 30 |
| TRI |  Trinidad dan Tobago | 30 |
| MGL |  Mongolia | 29 |
| URU |  Uruguay | 29 |
| HON |  Honduras | 27 |
| ISL |  Islandia | 27 |
| UAE |  Uni Emirat Arab | 26 |
| ARM |  Armenia | 25 |
| PUR |  Puerto Riko | 25 |
| BAH |  Bahama | 24 |
| GAB |  Gabon | 24 |
| SIN |  Singapura | 23 |
| INA |  Indonesia | 22 |
| MDA |  Moldova | 22 |
| PAK |  Pakistan | 21 |
| GUA |  Guatemala | 19 |
| KSA |  Arab Saudi | 19 |
| VIE |  Vietnam | 18 |
| PER |  Peru | 16 |
| TJK |  Tajikistan | 16 |
| UGA |  Uganda | 16 |
| KGZ |  Kirgizstan | 14 |
| CYP |  Siprus | 13 |
| ALB |  Albania | 12 |
| BRN |  Bahrain | 12 |
| ERI |  Eritrea | 12 |
| QAT |  Qatar | 12 |
| CRC |  Kosta Rika | 11 |
| KUW |  Kuwait | 11 |
| MRI |  Mauritius | 11 |
| PHI |  Filipina | 11 |
| CIV |  Pantai Gading | 10 |
| ESA |  El Salvador | 10 |
| GRN |  Grenada | 10 |
| LIB |  Lebanon | 10 |
| SYR |  Suriah | 10 |
| TKM |  Turkmenistan | 10 |
| FIJ |  Fiji | 9 |
| GHA |  Ghana | 9 |
| JOR |  Yordania | 9 |
| LUX |  Luksemburg | 9 |
| NAM |  Namibia | 9 |
| BER |  Bermuda | 8 |
| COK |  Kepulauan Cook | 8 |
| GUM |  Guam | 8 |
| IRQ |  Irak | 8 |
| PAR |  Paraguay | 8 |
| PNG |  Papua Nugini | 8 |
| SAM |  Samoa | 8 |
| CGO |  Republik Kongo | 7 |
| ISV |  Kepulauan Virgin Amerika Serikat | 7 |
| MAD |  Madagaskar | 7 |
| PAN |  Panama | 7 |
| RWA |  Rwanda | 7 |
| SKN |  Saint Kitts dan Nevis | 7 |
| SRI |  Sri Lanka | 7 |
| TAN |  Tanzania | 7 |
| ZAM |  Zambia | 7 |
| ZIM |  Zimbabwe | 7 |
| AFG |  Afganistan | 6 |
| AND |  Andorra | 6 |
| BAR |  Barbados | 6 |
| BDI |  Burundi | 6 |
| BIH |  Bosnia dan Herzegovina | 6 |
| BOL |  Bolivia | 6 |
| CAF |  Afrika Tengah | 6 |
| CAM |  Kamboja | 6 |
| DJI |  Jibuti | 6 |
| FSM |  Federasi Mikronesia | 6 |
| GUY |  Guyana | 6 |
| MLI |  Mali | 6 |
| MON |  Monako | 6 |
| MOZ |  Mozambik | 6 |
| MYA |  Myanmar | 6 |
| NCA |  Nikaragua | 6 |
| NIG |  Niger | 6 |
| SEY |  Seychelles | 6 |
| SUD |  Sudan | 6 |
| TOG |  Togo | 6 |
| ANT |  Antigua dan Barbuda | 5 |
| ASA |  Samoa Amerika | 5 |
| BAN |  Bangladesh | 5 |
| BEN |  Benin | 5 |
| BUR |  Burkina Faso | 5 |
| CAY |  Kepulauan Cayman | 5 |
| HAI |  Haiti | 5 |
| LBA |  Libya | 5 |
| MDV |  Maladewa | 5 |
| MLT |  Malta | 5 |
| NEP |  Nepal | 5 |
| PLE |  Palestina | 5 |
| PLW |  Palau | 5 |
| SUR |  Suriname | 5 |
| VAN |  Vanuatu | 5 |
| ARU |  Aruba | 4 |
| BOT |  Botswana | 4 |
| COD |  Republik Demokratik Kongo | 4 |
| GBS |  Guinea-Bissau | 4 |
| GUI |  Guinea | 4 |
| IOA |  Atlet Olimpiade Independen | 4 |
| LBR |  Liberia | 4 |
| LCA |  Saint Lucia | 4 |
| LES |  Lesotho | 4 |
| MHL |  Kepulauan Marshall | 4 |
| MKD |  Makedonia | 4 |
| OMA |  Oman | 4 |
| SMR |  San Marino | 4 |
| SOL |  Kepulauan Solomon | 4 |
| YEM |  Yaman | 4 |
| BIZ |  Belize | 3 |
| BRU |  Brunei | 3 |
| CHA |  Chad | 3 |
| COM |  Komoro | 3 |
| CPV |  Tanjung Verde | 3 |
| KIR |  Kiribati | 3 |
| LAO |  Laos | 3 |
| LIE |  Liechtenstein | 3 |
| MAW |  Malawi | 3 |
| SWZ |  Eswatini | 3 |
| TGA |  Tonga | 3 |
| TUV |  Tuvalu | 3 |
| VIN |  Saint Vincent dan Grenadines | 3 |
| BHU |  Bhutan | 2 |
| DMA |  Dominika | 2 |
| GAM |  Gambia | 2 |
| GEQ |  Guinea Khatulistiwa | 2 |
| IVB |  Kepulauan Virgin Britania Raya | 2 |
| MTN |  Mauritania | 2 |
| NRU |  Nauru | 2 |
| SLE |  Sierra Leone | 2 |
| SOM |  Somalia | 2 |
| STP |  Sao Tome dan Principe | 2 |
| TLS |  Timor Leste | 2 |