Der World Badminton Grand Prix 2003 war die 21. Auflage des World Badminton Grand Prix. Die Turnierserie bestand aus 15 internationalen Meisterschaften.
Die Sieger {| class="wikitable" style="font-size:90%;" ! Veranstaltung ! Herreneinzel ! Dameneinzel ! Herrendoppel ! Damendoppel ! Mixed |- | Thailand Open | Ronald Susilo | Dai Yun | Yoo Yong-sung Ha Tae-kwon | Wei Yili Zhao Tingting | Chen Qiqiu Zhao Tingting |- | All England | Muhammad Hafiz Hashim | Zhou Mi | Sigit Budiarto Candra Wijaya | Gao Ling Huang Sui | Zhang Jun Gao Ling |- | Swiss Open | Lee Hyun-il | Zhang Ning | Flandy Limpele Eng Hian | Yang Wei Zhang Jiewen | Jens Eriksen Mette Schjoldager |- | Japan Open | Xia Xuanze | Camilla Martin | Flandy Limpele Eng Hian | Gao Ling Huang Sui | Zhang Jun Gao Ling |- | Korea Open | Kenneth Jonassen | Mia Audina | Ha Tae-kwon Kim Dong-moon | Ra Kyung-min Lee Kyung-won | Kim Dong-moon Ra Kyung-min |- | Singapur Open | Chen Hong | Zhang Ning | Jens Eriksen Martin Lundgaard Hansen | Yang Wei Zhang Jiewen | Kim Dong-moon Ra Kyung-min |- | Indonesia Open | Taufik Hidayat | Xie Xingfang | Sang Yang Zheng Bo | Gao Ling Huang Sui | Kim Dong-moon Ra Kyung-min |- | Malaysia Open | Chen Hong | Zhou Mi | Kim Dong-moon Lee Dong-soo | Yang Wei Zhang Jiewen | Kim Dong-moon Ra Kyung-min |- | US Open | Chien Yu-hsiu | Kelly Morgan | Tony Gunawan Khankham Malaythong | Yoshiko Iwata Miyuki Tai | Tony Gunawan Eti Gunawan |- | Dutch Open | Lee Hyun-il | Yao Jie | Ha Tae-kwon Kim Dong-moon | Ra Kyung-min Lee Kyung-won | Ra Kyung-min Kim Dong-moon |- | Denmark Open | Lin Dan | Gong Ruina | Ha Tae-kwon Kim Dong-moon | Yang Wei Zhang Jiewen | Kim Dong-moon Ra Kyung-min |- | German Open | Lee Hyun-il | Zhang Ning | Flandy Limpele Eng Hian | Ra Kyung-min Lee Kyung-won | Kim Dong-moon Ra Kyung-min |- | Hong Kong Open | Lin Dan | Zhang Ning | Lee Dong-soo Yoo Yong-sung | Gao Ling Huang Sui | Kim Dong-moon Ra Kyung-min |- | Chinese Taipei Open | Wong Choong Hann | Mia Audina | Ha Tae-kwon Kim Dong-moon | Ra Kyung-min Lee Kyung-won | Kim Dong-moon Ra Kyung-min |- | China Open | Lin Dan | Zhou Mi | Lars Paaske Jonas Rasmussen | Gao Ling Huang Sui | Zhang Jun Gao Ling
Weblinks https://web.archive.org/web/20151117022055/http://www.asahi-net.or.jp/~zt8s-oon/bdm/calender03.htm