Hierarchy may also refer to:

• Hierarchy (mathematics), the mathematical model of a hierarchical structure as an ordered set
• Containment hierarchy, a hierarchy of only strictly nested sets
• Hierarchy (object-oriented programming), also known as inheritance, the creation of new classes from existing classes
• Hierarchical database model, a tree-like database model
• Hierarchical query, an SQL query on a hierarchical database
• Hierarchical linear modeling, multi-level statistical analysis and linear regression
• Hierarchical organization, the structure of most organizations, including governments, businesses and organized religions
• Catholic Church hierarchy
• Hierarchical network, the hierarchical of computer network components
• Hierarchical control system, a layered model for component organization in software and robotics
• Dominance hierarchy, an intraspecific ordering of individuals or groups by power status and dominance
• Social hierarchy, the concept as applied to humans
• Memory hierarchy, the hierarchical organization of computer storage for analysis of performance issues
• Hierarchy of life, the biological organisation of all life from the atomic level to the biosphere
• Hierarchy of genres, any formalization that ranks different types of art genres in an art-form in terms of their value
• Hierarchy of values, an ordered list of social values in US law
• Hierarchy of needs
• Hierarchy, an alien race in the Universe at War video game series

Common meanings Steps, making a staircase

• Walking
• Dance move
• Military step, or march
• Marching

Science, technology, and mathematics

• Step (software), a physics simulator in KDE
• Step function, in mathematics
• Striatal-enriched protein tyrosine phosphatase, an enzyme
• Serial transverse enteroplasty, a surgical procedure
• Spherical Tokamak for Energy Production, a UK nuclear fusion project
• STEP (satellite), to test general relativity
• STEP Library, a Bible software format
• ISO 10303 (.STEP), a CAD data-exchange file format standard
• Sustainable Transport Energy for Perth, a fuel cell bus program in Western Australia
• Staggered extension process, in molecular biology