See main article: 2015 Shimadzu All Japan Indoor Tennis Championships.
Martin Fischer was the defending champion but decided not to participate.
Michał Przysiężny won the title defeating John Millman in the final, 6–3, 3–6, 6–3.
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "2015 Shimadzu All Japan Indoor Tennis Championships – Singles".
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