Teach-Warship Astro) is a Japanese four-panel comic strip manga by Negi Banno about the lives of female teachers within a school at which they teach.

The "Astro" in the title is actually an acronym abbreviating "Asahio Sogo Teacher's ROom", alluding to the school's name Asahio Sogo.

The original title, Kyōkan Astro, plays on the fact that kyōkan (教官) is 'instructor' in Japanese, but the title uses the kanji kan (艦) meaning 'warship' in place of kan (官) meaning 'government service'.

Set in the present, the story focuses on the exploits of first time teachers Izumi Maki and Yuko Nagumo as they begin their teaching jobs at the school they used to attend (Asahio Shogo).

Other faculty members include Setsuna Arai, the school's nurse, and Kaname Karasuma, a veteran teacher.