Proliferation may refer to:

• Nuclear proliferation, the spread of nuclear weapons, material, and technology
• Chemical weapon proliferation, the spread of chemical weapons, material, and technology
• Missile proliferation, the spread of long range heavy payload missiles
• Small arms proliferation, the spread of small weapons
• Counter-proliferation, efforts to stop weapon proliferation

• License proliferation, a problem caused by incompatible software licenses
• Data proliferation, the challenge of dealing with large amounts of data

• Cell proliferation, cell growth and division
• Proliferation, a phase of wound healing
• Atypical small acinar proliferation, a concept in urologic pathology
• Intravenous atypical vascular proliferation, a skin condition
• Massive periretinal proliferation, a disease of the eye

musillll (album)|Proliferation (album)]], a 2008 album by Mike Reed's People, Places & Things

• Conceptual proliferation, a concept in Buddhism
• Product proliferation, an organization's marketing of many variations of the same product

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