| Beam-Hoan O (Incheon-si, KR) | Jung Sok O (Seoul, KR) | Waho O (Tokyo, JP) |
| Boen H. O (Utrecht, NL) | Kazunori O (Tokyo, JP) | David S. O' Banion (Sparks, NV) |
| Boen Ho O (Utrecht, NL) | Kenneth O (Gainesville, FL) | Ciaran S. O Breartuin (Frinco, IT) |
| Chan-seob O (Suwon, KR) | Kenneth K O (Gainesville, FL) | Ciaran S. O Breartuin (Clayton, MO) |
| Chih-Ping O (Taipei, TW) | Kenneth K. O (Gainesville, FL) | Thomas Daniel O Brien (Honeoye Falls, NY) |
| Gown-Jong O (Suwon, KR) | Kenneth K. O (Boston, MA) | Frank L. O 'Brien (Westminster, CO) |
| Hen Seg O (Taegu, KR) | Kenneth Kyongyop O (Gainesville, FL) | Michael L. O Connor (Redwood City, CA) |
| Hugh O (Fremont, CA) | Nixon O (Waterloo, CA) | Graciela I. O de Portas (1428 Buenos Aires, AR) |
| Hugh S. O (Fremont, CA) | Phil O (Greenwood, IN) | Graham O Donnell (Dublin, IE) |
| Hugh Sungki O (Fremont, CA) | Sangkil O (Los Angeles, CA) | Nial O' hEarcain (Dun Laoghaire, IE) |
| Hugh Sung-Ki O (Fremont, CA) | Se Eun O (Soowon-Shi, KR) | Brian J. O Keefe (Fort Collins, CO) |
| Hugh Sungki. O (Fremont, CA) | Se-eun O (Suwon-si, KR) | Mark E. O Loughlin (Galloway, OH) |
| Hugh Sung-Ki. O (Fremont, CA) | Sungki O (Milpitas, CA) | David P. O Mara (Canyon Country, CA) |
| Hyeon Seok. O (Suwon, KR) | Tae Jun O (Jinjeob Eup Namyangju-shi, KR) | Padraig Gerard O Mathuna (San Jose, CA) |
| Hyun-taek O (Jeonnam, KR) | Takashi O (Yokohama, JP) | Mark O Neill (Dublin, IE) |
| Hyun-taek O (Jeollanam-do, KR) | Takashi O (Kanagawa-ken, JP) | Daniel Patrick O 'Neill (Freeport, NY) |
| Jang-Hun O (Dae-gu, KR) | Ui Hwan O (Los Angeles, CA) | |
|