S.S. Astro (教艦ASTRO, Kyōkan ASTRO, lit. 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.