Look up omission or omit in Wiktionary, the free dictionary.

Omission may refer to:

• Omission (Catholicism), a type of sin
• Omission (law), a failure to act, with legal consequences
• Omission bias, a tendency to favor inaction over action
• Purposeful omission, a literary method
• Theory of omission, a writing technique
• The Omission, a 2018 Argentine film
• Selective omission, an effort to forget traumatic memories
• Lying by omission