Toshie Iwamoto (岩本 敏恵, Iwamoto Toshie, née Kitada (北田), born 9 September 1969 in Osaka Prefecture) is a Japanese retired sprinter. She competed in the 4 × 100 metres relay at the 1991 World Championships in Tokyo, 1997 World Championships in Athens and 1999 World Championships in Seville. She is the former Japanese record holder in the 100 metres, 200 metres, 4 × 100 metres relay and indoor 60 metres.