Tawag ng Tanghalan: All-Star Grand Resbak season 1

Tawag ng Tanghalan: All-Star Grand Resbak is the all-star edition of the amateur singing competition Tawag ng Tanghalan that features returning contenders from the previous seasons of the series. The first all-star season, retroactively titled as Tawag ng Tanghalan: All-Star Grand Resbak 2019, was aired as a segment of the noontime show It's Showtime. It premiered from November 11 to December 21, 2019.

The season featured resbakers and semi-finalists from first, second, and third seasons, as well as Celebrity Champions who did not advance to the live finale of their respective seasons.

Mark Michael Garcia from Metro Manila emerged as the first Grand Resbak Champion of this edition that spanned for 6 weeks.