The Astana Challenger Capital Cup was a professional tennis tournament played on indoor hardcourts. It was part of the Association of Tennis Professionals (ATP) Challenger Tour. It was held in Astana, Kazakhstan, in 2016.

Past finals Singles YearChampionRunner-upScore 2016 Yoshihito Nishioka Denis Istomin 6–4, 6–7(7–4), 7–6(7–3)

Doubles YearChampionsRunners-upScore 2016 Timur Khabibulin Aleksandr Nedovyesov Mikhail Elgin Denis Istomin 7–6(9–7), 6–2

References