Detective School Q (Japanese: 探偵学園Q, Hepburn: Tantei Gakuen Kyū) is a Japanese manga series written by Seimaru Amagi and illustrated by Fumiya Satō (the creators of The Kindaichi Case Files). It was originally serialized in Kodansha's Weekly Shōnen Magazine between May 2001 and July 2005, with its chapters collected in 22 tankōbon volumes. A 45-episode anime television series by Pierrot was broadcast on TBS from April 2003 to March 2004.

Detective School Q is the story of a group of young students from Class Q of Dan Detective School (DDS), a prestigious and renowned detective academy founded by Morihiko Dan, the most famous detective in Japan, and the adventures and mysteries they unfold and solve together. They eventually work against Pluto (冥王星, Meiosei), a mysterious organization which creates almost fool-proof plans that only a handful of detectives can solve.

Detective School Q, written by Seimaru Amagi and illustrated by Fumiya Satō, was serialized in Kodansha's Weekly Shōnen Magazine between May 23, 2001, to July 20, 2005. Kodansha collected its chapters in 22 tankōbon volumes, released from September 17, 2001, to October 17, 2005.

A 45-episode anime television series adaptation, animated by Pierrot and directed by Noriyuki Abe, was broadcast on TBS from April 15, 2003, to March 20, 2004. The episodes were collected in twelve DVD sets, released by Marvelous Entertainment between August 23, 2003, and July 24, 2004. The series' first opening theme (episodes 1–21) is "MeiQ!? – Meik Yū – Make You [ja]" (迷Q!?-迷宮-MAKE★YOU), performed by Hayami Kishimoto; the second (episodes 22–34) and third opening theme (episodes 35–45) are "Luvly, Merry-Go-Round" and "100% Pure", respectively, both performed by Pipo Angels [ja]. The first ending theme (episodes 1–11) is "Koigokoro" (恋ごころ; "My Love") performed by Akane Sugazaki; the second ending theme (episodes 12–21) is "Nijiiro ni Hikari Umi" (虹色にひかる海; "The Rainbow-colored Sea") performed by Aiko Kitahara; the third (episodes 22–34) and fourth ending theme (episodes 35–45) are "Mienai Story" (みえないストーリー, Mienai Sutōrī; "Invisible Story") and "Kaze ni Mukai Aruku Youni" (風に向かい歩くように; "Like Walking towards the Wind"), respectively, both performed by Hayami Kishimoto.

A two-hour special television drama adaptation was broadcast on Nippon TV on July 1, 2006. An eleven-episode television drama adaptation series was broadcast on Nippon TV from July 3 to September 11, 2007. The opening theme is "Answer" by Flow, while the ending theme was "Stand By Me" by the brilliant green.