| Rank | Country | females | Manpower reaching military service age annually |
| Sierra Leone | |  male: 70,068 female: 73,930 (2008 est.) |
| Singapore | |  male: 27,742 female: 26,325 (2008 est.) |
| Slovakia | |  male: 38,183 female: 36,388 (2008 est.) |
| Slovenia | |  male: 10,516 female: 9,934 (2008 est.) |
| Solomon Islands | |  male: 6,924 female: 6,679 (2008 est.) |
| Somalia | |  male: 95,446 female: 95,339 (2008 est.) |
| South Africa | |  male: 529,201 female: 522,678 (2008 est.) |
| South Georgia and the South Sandwich Islands | | void |
| Southern Ocean | | void |
| Spain | |  male: 203,650 female: 191,352 (2008 est.) |
| Spratly Islands | | void |
| Sri Lanka | |  male: 174,065 female: 168,593 (2008 est.) |
| Sudan | |  male: 488,679 female: 469,547 (2008 est.) |
| Suriname | |  male: 4,329 female: 4,350 (2008 est.) |
| Svalbard | | void |
| Swaziland | |  male: 15,951 female: 15,728 (2008 est.) |
| Sweden | |  male: 64,605 female: 61,110 (2008 est.) |
| Switzerland | |  male: 49,205 female: 45,220 (2008 est.) |
| Syria | |  male: 215,734 female: 203,106 (2008 est.) |
| Taiwan | |  male: 164,883 female: 152,085 (2008 est.) |
| Tajikistan | |  male: 84,137 female: 81,777 (2008 est.) |
| Tanzania | |  male: 478,812 female: 479,557 (2008 est.) |
| Thailand | |  male: 531,315 female: 511,288 (2008 est.) |
| Timor-Leste | |  male: 13,045 female: 12,670 (2008 est.) |
| Togo | |  male: 69,156 female: 69,200 (2008 est.) |
| Tokelau | | void |
| Tonga | |  male: 1,464 female: 1,412 (2008 est.) |