A cluster is a small group or bunch of something.

Cluster may refer to:

• Cluster bomb, air-dropped or ground launched shells
• Cluster (band), a German musical group
• Tone cluster, in music
• Consonant cluster, in linguistics

In science:

• Cluster chemistry, an array of bound atoms intermediate in character between a molecule and a solid
• Cluster (physics), a small group of atoms or molecules
• Cluster sampling, a type of sampling
• Data clustering, a technique for statistical data analysis
• Porter's cluster, a geographical location with resources
  • Techno cluster, a science and high tech Porter's cluster

In astrophysics:

• Star cluster, groups of stars which are gravitationally bound
• Galaxy groups and clusters, large gravitationally-bound objects
• Cluster mission, an European Space Agency mission to study the magnetosphere

In biology:

• Cancer cluster, in biomedicine, an occurrence of a greater-than-expected number of cancer cases
• Winter cluster, in beekeeping, a well-defined cluster of honey bees in cold temperatures

In computing:

• Computer cluster, a group of loosely coupled computers that work together closely
• Cluster (file system), a group of disk sectors used in a File Allocation Table
• Cluster Resources, Inc., provider of workload and resource management software for cluster computing

In education:

• //en.wikipedia.org/wiki/User_talk:Ucortes Cluster, Consortium Linking Universities of Science and Technology for Education and Research

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