Wakakozake (ワカコ酒, lit. 'Wakako Sake') is a Japanese manga series by Chie Shinkyu. It has been serialized by Tokuma Shoten in the seinen manga magazine Monthly Comic Zenon since the September 2011 issue; it is also available on Web Comic Zenyon. The series has thirteen volumes so far; the first volume was released in May 2013, and the latest release in August 2019.

It was adapted into a Japanese television drama by North Stars Pictures starring Rina Takeda, and a short-length anime television series by Office DCI aired from July 5, 2015, to September 20, 2015. Season 1 of the live action adaptation was aired April 3, 2015, followed by the second season, released on January 8, 2016, and the third season, released on April 7, 2017. After a year's hiatus, the fourth season aired on January 7, 2019. On October 24, 2019, TV Tokyo and Monthly Comic Zenon simultaneously announced that the Season 5 of the live-action adaptation would air in January 2020.

All adaptations, both anime and live-action, were broadcast on TV Tokyo and BS Japan. The anime is currently streaming on Crunchyroll, with the platform also streaming two early seasons of the live-action adaptation; both are distributed by SPO Entertainment. As of 2019, it is unknown when Crunchyroll will release Season 3, 4, and 5 of the live-action Wakakozake.

A spin-off manga written by Nenzu Nyanbara titled Taishū Sakaba Wakao - Wakako-zake Betten has been serialized in Tokuma Shoten's Web Comic Zenyon since January 2019 and will end with the release of its seventh volume.