Getsuyo Mystery Gekijo
- Title: 月曜ミステリー劇場
- Title (romaji): Getsuyo Mystery Gekijo
- Also known as: The Monday Night Mystery Theater / Mystery Theater (KIKU)*
- Genre: Tanpatsu-formatted weekly mystery series
- Broadcast network: TBS
- Broadcast period: Monday 21:00 to 22:54
- Broadcast start/end: 2001-April to 2006-March
Getsuyo Mystery Gekijo is a weekly mystery series. Virtually all storylines follow along the following path:
- A murder occurs early on.
- A lead person attempts to solve the case.
- A murderer is found, and usually confesses.
Each week features a fresh new cast and storyline.
- Inspector Totsugawa Series
- Tax Inspector Madogiwa Taro
- Mitsuhiko Asami Series
- Kyotaro Nishimura Suspense -Susumu Samonji
- Jidan Kosho Jinnai Tamako Ura File
- A Case of Murder by the Atami Station Taxi Stand
- Doyo Wide Gekijo occupied the first 54 episodes of Mystery Theater in 2004 on KIKU. KIKU then switched to Getsuyo Mystery Gekijo in 2005.