Asano Tsunanaga (?? ??, July 28, 1659 – April 1, 1708) was a Japanese daimyo of the Edo period, who ruled the Hiroshima Domain.
He held the title of Aki no kami.
His childhood name was Iwamatsu (??).
During the 47 ronin incident, Tsunanaga sent a messenger to Ako, which was ruled by a branch family of the Hiroshima Asano, and recommended that Oishi Kuranosuke peacefully surrender the castle to the shogunate's envoys.
His daughter married the court noble Ichijo Kaneka.