The 2011 Samsung Securities Cup was a professional tennis tournament played on hard courts. It was the 12th edition and the 1st edition of the tournament which was part of the 2011 ATP Challenger Tour and the 2011 ITF Women's Circuit. It took place in Seoul, South Korea between 17 and 23 October 2011.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Lu Yen-hsun | 74 | 1 | ||
 Slovenia | Grega Žemlja | 115 | 2 | |
 Japan | Go Soeda | 116 | 3 | |
| Japan | Tatsuma Ito | 121 | 4 | |
| Rik de Voest | 129 | 5 | ||
 France | Florent Serra | 141 | 6 | |
 Belarus | Uladzimir Ignatik | 167 | 7 | |
 Poland | Michał Przysiężny | 170 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Japan | Yurika Sema | 180 | 1 | |
| Hsieh Su-wei | 192 | 2 | ||
| Japan | Aiko Nakamura | 221 | 3 | |
| Japan | Erika Takao | 282 | 4 | |
 Thailand | Nicha Lertpitaksinchai | 309 | 5 | |
 Korea, Republic of | Kim So-jung | 310 | 6 | |
 China | Hu Yueyue | 337 | 7 | |
| Korea, Republic of | Han Sung-hee | 425 | 8 |
The following players received wildcards into the singles main draw:
Choi Ji-hee Ham Mi-rae Lee Se-jin Lee So-raThe following players received entry from the qualifying draw:
Kang Seo-kyung Kim Ji-young Kim Ju-eun Mai Minokoshi Yea Hyojung Yuan Yue Zhang YuxuanSee main article: 2011 Samsung Securities Cup – Men's singles. Lu Yen-hsun def. Jimmy Wang, 7–5, 6–3
See main article: 2011 Samsung Securities Cup – Women's singles. Hsieh Su-wei def. Yurika Sema, 6 - 1, 6 - 0
See main article: 2011 Samsung Securities Cup – Men's doubles. Sanchai Ratiwatana / Sonchat Ratiwatana def. 
Purav Raja / Divij Sharan, 6–4, 7–6(7–3)
See main article: 2011 Samsung Securities Cup – Women's doubles. Kang Seo-kyung / Kim Na-ri def. Kim Ji-young / Yoo Mi, 5–7, 6–1, [10–7]
