The term Suppression may refer to:

• Oppression
• Censorship
• Voter suppression
• Cultural suppression
• Suppression of religion
• Political suppression
• Thought suppression, the process of deliberately trying to stop thinking about certain thoughts

Weapons

• Suppressor
• Suppressive fire

Math, science, and technology

• Compton suppression, in nuclear physics
• Free energy suppression and other suppressed technology
• Silence suppression, in telephony
• Suppression subtractive hybridization, in biochemistry
• Transient voltage suppression diode
• Electromagnetic interference suppression, e.g., of electrical noise from switches and motors.
• Zero suppression, in math and information theory

Health and medicine

• Appetite suppression
• Bone marrow suppression
• Suppression (eye)
• Flash suppression
• Reflux suppressant, in medicine

Other

• Fire fighting ("fire suppression")
• Fire suppression systems
• Suppressed correlative, a logical fallacy
• Suppression of the Society of Jesus
• Tohunga Suppression Act 1907
• Suppression of Communism Act
• Suppressive Person and the book, The Cause of Suppression, about the Church of Scientology concept