Tatsue Ishikawa
Japanese businessperson and racehorse owner

Tatsue Ishikawa (石川達絵) is a Japanese businesswoman and racehorse owner.
She is the CEO of Digimerce, a company that develops applications of smartphones and video game devices.
Biography
Born in Tokyo in 1962, she founded Digimerce in 2005 after branching out of Barows.
As a racehorse owner
In 2003, Ishikawa became a racehorse owner in Ohi Racecourse, before becoming a racehorse owner in the JRA in 2009.
In 2017, Ishikawa had her first graded race and Grade I win when Kiseki won the Kikuka-shō.
She does not use any particular eponyms, and her horses are often simply named. However, for what would become one of her most famous horse, Kiseki, she initially applied for various names but was rejected, before applying for "Kiseki" on a whim and being approved.
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The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Jul 19, 2026. The linked authority identifier is Q117460227. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1962, 2005, 2003 and 2009.
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This entry incorporates text from “Tatsue Ishikawa” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.