JASDAQ (Japanese: ジャスダック, Hepburn: Jasudakku), formerly the JASDAQ Securities Exchange (ジャスダック証券取引所, Jasudakku Shōken Torihikijo) is one of the sections of the Tokyo Stock Exchange. It was formerly an independent stock exchange.
JASDAQ is not related to NASDAQ in the United States, but has operated an electronic trading system similar to NASDAQ.