Kasumi Ishikawa

In January 2020, she was announced to be part of the women's table tennis team for the 2020 Tokyo Olympics, together with Ito Mima and Miu Hirano. Furthermore, she will be making her third appearance in the Singles category with Ito Mima.

At the 2017 World Table Tennis Championships held in Düsseldorf, partnering compatriot Maharu Yoshimura in the mixed doubles event, Ishikawa and Yoshimura progressed through to the final, beating the combination of Fang Bo and Petrissa Solja in the semi-finals, and overcame the Taiwanese pair of Chen Chien-an and Cheng I-ching 4–3 to win the first title in this tournament. It was also Japan's first mixed doubles gold medal after 48 years.

Ishikawa appeared in the 2017 film Mixed Doubles as herself.

She won bronze with the Japanese Olympic team in Rio de Janeiro 2016, beating together with Ai Fukuhara and Mima Ito on her side the team from Singapore. She also represented Japan in the women's singles event, where she crashed out of the tournament after suffering a cramp in her leg, losing 4–3 to North Korea's Kim Song-i in their third-round match.

In Japan, Ishikawa has ranked among the five most popular sportswomen every year from 2014 to 2019 in annual lists published by Oricon. As she is fluent in Mandarin which she learned from Chinese coaches, her popularity has also extended to China. When she opened a Sina Weibo account in 2016, she gained over 60,000 followers on the first day.

She reached the semi-finals of the Women's Singles at the London 2012 Olympics but lost out to eventual gold medal winner; Li Xiaoxia of China. In the bronze medal play-off, she lost out to Feng Tianwei of Singapore. She finished an overall 4th position. This was her first ever Olympics participation and despite her young age of 19, she was seeded no. 4 at the Women's Singles Event. She is also the first ever Japanese to have reached the semi-finals of the tournament.

She competed at the 2009 World Table Tennis Championships, reaching the quarter final of the singles competition. In 2011, she won the national singles title at the age of 17. She quickly rose through the world rankings in recent years and managed to secure a place to compete at the London 2012 Olympics. She is currently ranked 6th in the ITTF women's world ranking as of July 2012 but has achieved ranking as high as 5th. She is now the best female table tennis player in Japan after managing to overtake Ai Fukuhara in rankings.

Upon graduation from Hirakawa Primary School in Yamaguchi, Ishikawa wrote in the yearbook of her dream to play in the Olympics. She first got public attention when she managed to defeat high school and even university students much older than her in her first ever All Japan Table Tennis Championships. Since 2007, she has won the All Japan Table Tennis Championships – female junior division; four years in a row. She was also nicknamed Ai-Chan II, a comparison to fellow athlete Ai Fukuhara, who also started playing table tennis at a young age. She models her underspin serve after Fukuhara.

Kasumi Ishikawa (石川 佳純 , Ishikawa Kasumi) (born 23 February 1993) is a female Japanese table tennis player. A regular member of the Japanese national team, she won a silver medal at the 2012 Summer Olympics and a bronze at the 2016 Summer Olympics.