Seiko Yamada (山田靑子 Yamada Seiko, born March 22, 1978 in Toyama, Japan) is a female badminton player from Japan.
Yamada competed in badminton at the 2004 Summer Olympics in women's doubles with partner Shizuka Yamamoto. They were defeated by Chin Eei Hui and Wong Pei Tty of Malaysia in the round of 32. She is currently ranked #7 in Japan.