0 Camilla Martin, From Barcelona 1992 to Athens 2004

Camilla Martin played at four different Olympic Games, from 1992 to 2004. It means she participated more than anybody else in the Women's Singles division.

1992 Second Round (lost to Anna Lao AUS)
1996 quarterfinals (lost to Mia Audina INA)
2000 Silver Medal (runner-up to Gong Zhichao CHN)
2004 Second Round (lost to Tracey Hallam GBR)

During her Olympic careers, she played 12 times (8 wins-4 losses). Martin's 4-time Olympic appearances are leading the all-time Olympic badminton appearances in Women's Singles division as of Beijing 2008.

CAMILLA MARTIN at the All England 2002 final against Gong Ruina

List of Women's Singles players who have appeared at more than one Olympic Games since 1992.

4 times

Camilla Martin (DEN) 1992, 1996, 2000, 2004

3 times 

Mia Audina (INA/NED) 1996, 2000, 2004

Kelly Morgan (GBR) 1996, 2000, 2004 

Hisako Mizui (JPN) 1992, 1996, 2000

Katarzyna Krasowska (POL) 1992, 1996, 2000

Sandra Dimbour (FRA) 1992, 1996, 2000

Neli Boteva (BUL) 1992, 1996, 2000

Anu Nieminen (FIN) 2000, 2004, 2008

2 times

Susi Susanti (INA) 1992, 1996

Bang Soo-hyun (KOR) 1992, 1996

Sung Ji-hyun (KOR) 2004, 2008

Ye Zhaoying (CHN) 1996, 2000

Zhang Ning (CHN) 2004, 2008

Somhasurthai Jaroensiri (THA) 1992, 1996

Pornsawan Plungwech (THA) 1992, 1996

Salakjit Ponsana (THA) 2004, 2008

Tine Baun (DEN) 2004, 2008 (as Tine Rasmussen)

Joanne Muggerridge (GBR) 1992, 1996

Tracey Hallam (GBR) 2004, 2008

Denyse Julien (CAN) 1992, 1996

Kanako Yonekura (JPN) 2000, 2004

Elena Rybkina (EUN/RUS) 1992, 1996

Marina Yakusheva (RUS) 1996, 2000

Ella Diehl (RUS) 2000, 2008 (as Ella Krachkova)

Wang Chen (HKG) 2004, 2008

Erika Von Heiland (USA) 1992, 1996

Aparna Popat (IND) 2000, 2004

Juliane Schenk (GER) 2004, 2008

Rhona Robertson (NZL) 1992, 1996

Christine Magnusson (SWE) 1992, 1996

Catrine Bengtsson (SWE) 1992, 1996

Zarinah Abdullah (SIN) 1992, 1996

Martine De souza (MRI) 1992, 1996

Pi Hongyan (FRA) 2004, 2008

Elsa Nielsen (ISL) 1992, 1996

Petya Nedelcheva (BUL) 2004, 2008

Huang Chia-Chi (TPE) 1996, 2000

Cheng Shao-Chieh (TPE) 2004, 2008

Olena Nozdran (UKR) 1996, 2000

Notes: 

Ra Kyung-min (KOR) actually played at three Olympic Games, from 1996 to 2004, but she appeared in the Women's Singles division only at Atlanta 1996.