Yuki Ishii
is a Japanese volleyball player who plays for Hisamitsu Springs. She also plays for the All-Japan women's volleyball team.

Ishii played for the All-Japan team for the first time at the Montreux Volley Masters in June 2011.

Clubs
  Toyo Junior High
  Shujitsu Highschool
  Hisamitsu Springs (2010-)

National team
  National team (2011-)

Awards

Individuals
2013 Japan-Korea V.League Top Match - MVP
 2013-14 V.Premier League - Best Server
 2014 Asian Club Championship - Best Outside Spiker
 2015 Montreux Volley Masters - MVP, Best Outside Spiker
 2017/18 V.League - MVP, Best Wing Spiker (best 6) and Best receiver

Clubs
 2011-2012 V.Premier League -  Runner-Up, with Hisamitsu Springs.
 2012 Empress's Cup -  Champion, with Hisamitsu Springs.
 2012-2013 V.Premier League -  Champion, with Hisamitsu Springs.
 2013 - Japan-Korea V.League Top Match -  Champion, with Hisamitsu Springs.
 2013 - Kurowashiki All Japan Volleyball Tournament -  Champion, with Hisamitsu Springs.
 2013 - Empress's Cup -  Champion, with Hisamitsu Springs.
 2013-2014 V.Premier League -  Champion, with Hisamitsu Springs.
 2014 Asian Club Championship -  Champion, with Hisamitsu Springs.
 2014 - Empress's Cup -  Champion, with Hisamitsu Springs.
 2014-2015 V.Premier League -  Runner-Up, with Hisamitsu Springs.

National Team 
 2013 Asian Championship -  Silver medal
 2014 FIVB World Grand Prix -  Silver medal
 2015 Montreux Volley Masters -  Silver medal