Saki Niizoe (born 4 July 1996) is a Japanese judoka. She won one of the bronze medals in the women's 70 kg event at the 2022 World Judo Championships held in Tashkent, Uzbekistan. She won the gold medal in the women's 70 kg event at the 2018 Asian Games held in Jakarta, Indonesia. She won the silver medal in her event at the 2022 Judo Grand Slam Paris held in Paris, France. She won one of the bronze medals in the women's 70 kg event at the 2022 World Judo Championships held in Tashkent, Uzbekistan.