Ritsu
Ritsu may refer to:

 Vinaya, the Buddhist regulatory framework
 Risshū (Buddhism), a name of a Japanese school of Buddhism strictly following this framework
 the historical Japanese term for a criminal code as part of the Ritsuryō law system
 Ritsu scale, a type of musical scale; see Ritsu and ryo scales

People with the given name
, Japanese footballer
, subject in a forged interview on The Asahi Shimbun
Grayce Uyehara, born Grayce Ritsu Kaneda (19192014), Japanese-American activitst
, former guitarist in The Stalin

Fictional characters 
, a character in the manga series Assassination Classroom
, a character in the ONA and anime series Kemurikusa
, a character in the manga and anime series Fire Force
, a character in the light novel series R-15
, a character in the television drama series Hanbun, Aoi
, a character in the manga series Chūgakusei Nikki
, a character in the manga series Gin no Spoon
, a character in the anime series Mewkledreamy
, a character in the manga and anime series Mob Psycho 100
, a character in the novel Hana no Furu Gogo
Ritsu Kamiji, a character in the visual novel series Parascientific Escape
, a character in the manga and anime series Ouran High School Host Club
, a character in the manga series The Kawai Complex Guide to Manors and Hostel Behavior
, a character in the visual novel The Fruit of Grisaia
, a character in the manga series Loveless
, a character in the light novel series As a Reincarnated Aristocrat, I'll Use My Appraisal Skill to Rise in the World
, a character in the anime series Kado: The Right Answer 
, a character in the manga and anime series The World's Greatest First Love
, a character in the anime series Pretty Rhythm: Rainbow Live
, a character in the game franchise Ensemble Stars!
, a character in the anime series Star-Myu
, the protagonist in the anime series Caligula
, a character in the light novel series Asura Cryin'
Shito Ritsu (Chinese: ), a character in the manhua Spiritpact
, a character in the manga and anime series Fruits Basket
, a character in the manga and anime series K-On!

Japanese masculine given names
Masculine given names