Teekyu (Japanese: てーきゅう, Hepburn: Tēkyū) is a sports comedy manga series written by Roots and illustrated by Piyo. It was serialized in Earth Star Entertainment's Comic Earth Star from February 2012 to January 2018. The name of the series is a pun on the Japanese word for tennis, teikyū (庭球). The manga has been adapted into an anime television series, which ran from 2012 to 2017.

Teekyu also had a spinoff comedy manga series, also serialized in Comic Earth Star, named Takamiya Nasuno Desu! (高宮なすのです！), translated as "I am Takamiya Nasuno!" (full name Takamiya Nasuno Desu! ~Teekyu Spinoff~ (高宮なすのです！〜てーきゅうスピンオフ〜)), featuring one of the main characters of Teekyu in her own adventures. It has had two tankōbon releases, and also received a 12-episode anime adaptation in 2015.

Another spin-off manga series named Usakame (うさかめ) which features the Tennis Club's opponents was released in 2015. It has had three tankōbon releases so far, and also received a 12-episode anime adaptation in 2016.