Critical or Critically may refer to:
Critical, or critical but stable, medical states
Critical, or intensive care medicine
Critical juncture, a discontinuous change studied in the social sciences.
Critical Software, a company specializing in mission and business critical information systems
Critical theory, a school of thought that critiques society and culture by applying knowledge from the social sciences and the humanities
Critically endangered, a risk status for wild species
Criticality (status), the condition of sustaining a nuclear chain reaction
