An assumption is a proposition that is taken for granted, that is, as if it were known to be true.

Assumption may also refer to:

• In logic, more specifically in the context of natural deduction systems, an assumption is made in the expectation that it will be discharged in due course via a separate argument.
• Assumption reinsurance, a form of reinsurance whereby the reinsurer is substituted for the ceding insurer and becomes directly liable for policy claims
• In real property law, an assumption is the mortgage transfer from the seller to the buyer
• In business planning and business plans, an assumption is an assertion about some characteristic of the future that underlies the current operations or plans of an organization
• Assumption (Poker), a fictional type of Poker game variation, using Tarot cards instead of traditional playing cards. It appears as a primary plot point in the novel "Last Call" by Tim Powers. Fans of the author often play Assumption when at conventions or writing workshops

Concepts:

• Entering heaven alive
• Assumption of Mary, a religious account of the taking up of Mary into heaven
• Assumption of Moses, a Jewish apocryphal pseudepigraphical work of uncertain date and authorship
• Responsibility assumption, a doctrine in the spirituality and personal growth fields holding that each individual has substantial or total responsibility for the events and circumstances that befall them in their life

Locations:

• Assumption Cathedral
• Assumption, Illinois (USA)
• Assumption Island (Seychelles)
• Assumption, Ohio (USA)
• Assumption Parish (Louisiana, USA)
• L'Assomption River (Quebec, Canada)

Schools:

• Assumption Antipolo (Philippines)
• Assumption Junior Senior High School, Cold Lake, Alberta
• Assumption High School (Indiana)
• Assumption High School (Davenport, Iowa)
• Assumption High School (Louisville, Kentucky)
• Assumption High School (Louisiana), Napoleonville, Louisiana
• Assumption College, Worcester, Massachusetts
• Assumption Secondary School, Burlington, Ontario
• Assumption College Catholic High School, Windsor, Ontario
• Assumption College School, Windsor, Ontario
• Assumption University, Bangkok, Thailand
• Assumption High School (Wisconsin Rapids, Wisconsin)