The following outline is provided as an overview of and topical guide to library science:

Library science is the study of issues related to libraries and the information fields. This includes academic studies regarding how library resources are used and how people interact with library systems. The organization of knowledge for efficient retrieval of relevant information is also a major research goal of library science. Being interdisciplinary, it overlaps with computer science, various social sciences, statistics, and systems analysis. It is also called "library and information science", abbreviated "LIS".

Essence of library science

• Glossary of library and information science
• Cataloging
• Classification
• Information architecture
• Librarian
• Library

Branches of library science

• Archival science
• Bibliographic databases
• Cataloging
• Library instruction
• Preservation
• Readers' advisory
• Reference

Types of library-science professionals

• Librarian
  • Application specialist – see integrated library system
  • Cataloguing librarian – see library catalog
  • Collections librarian – see library collection development
  • Electronic resources librarian – see electronic resource management
  • Law librarian – expert in legal research
  • Metadata librarian – see metadata
  • Reference librarian – helps patrons with research
  • Research instruction librarian – see library instruction
  • Teacher-librarian
• Archivist
• Curator
• Indexer
• Information architect
• Information consultant (may be a qualified librarian)
• Prospect researcher
• Records manager (see Records management)

History of library science

History of library science

• History of Information Science
• List of larger libraries in the ancient world

Types of libraries

• Academic library
• Archive
• Digital library
• National library
  • List of national libraries
• Public library
  • Carnegie library
• Research library
• School library
• Special library

Specific libraries

• List of libraries

Library resources

Information media

• Audiobook
• Bibliographic database
• Book
  • List of books
• Bookmark
• Braille book
• CD-ROM
• Codex
• Compact audio cassette
• Compact disc
• DVD
• Ebook
• Film Stock
• Gramophone record
• Information architecture
• Laserdisc
• Magnetic tape
• Manuscript
• Map
• Microfiche
• Microfilm
• Microprint
• Newsgroup
• Newspaper
• Pamphlet
• Phonograph cylinder
• Photograph
• Scroll (parchment)
• Sheet music
• Slide library
• Videotape
• Web site
• Wire recording

Types of publications

• Academic journal
• Almanac
  • List of almanacs
• Atlas
• Comic book
• Dictionary
• Encyclopedia
  • Lists of encyclopedias
• Gazetteer
• Graphic novel
• Lexicon
• Magazine
• Newspaper
  • Specific newspapers
• Reference work
• Serial
• Series of books
• Telephone directory
• Thesaurus

Catalogs and indexes

• AACR2
• Accession number
• Authority control
• Bliss bibliographic classification
• Classification
• Collation
• Colon classification
• Colophon
• Dewey Decimal Classification
• Controlled vocabulary
• Index
• International Standard Bibliographic Description
• Library catalog
• Library of Congress Classification
• Machine Readable Cataloging
• NUCMC
• OCLC
• OPAC
• Resource Description and Access
• Subject
• Universal Decimal Classification
• WorldCat

Information science

• Glossary of information science terms
• Human-computer interaction
• Integrated library system
• Evidence-based library and information practice

Organization of information

• Cataloging and classification
  • List of Catalogs and indexes
  • Subject indexing
  • Taxonomic classification
  • Scientific classification
  • Statistical classification
  • Security classification
  • Film classification
• Categorization
• Data modeling
• Knowledge management/ Knowledge engineering
• Information architecture
• Information system

Electronic information storage and retrieval

• Data storage
  • Boolean expression
  • Computer storage
  • Data management
  • Data storage device
  • Database
  • Digital library
  • Document management
  • Expert system
  • Fuzzy logic
  • Geographic Information System
  • Invisible web
  • Keyword
  • Knowledge management
  • Memory
  • Metadata
  • OpenURL
  • Precision
  • Recall
  • Semantic web
  • XML
• Information retrieval
  • Controlled vocabulary
  • Cross-language information retrieval
  • Digital libraries
  • Document classification
  • Educational psychology
  • Federated search
  • Full text search
  • Geographic information system
  • Information extraction
  • Information seeking
  • Knowledge visualization
  • Question answering
  • Search engines
  • Search index
  • tf-idf

Infometrics

• Bibliometrics – studies quantitative aspects of recorded information
• Webometrics – studies quantitative aspects of the World Wide Web
• Cybermetrics – similar to webometrics, but broadens its definition to include electronic resources

Scientometrics

Scientometrics – studies quantitative aspects of science

• Bradford's law
• Citation
• Data mining
• Impact factor
• Information retrieval
• Peer review
• Web mining

Informatics

Informatics

• Bioinformatics
• Biodiversity Informatics
• Biomedical informatics
• Business Informatics
• Ecoinformatics
• Cheminformatics
• Community informatics
• Geoinformatics
• Health informatics
• Laboratory informatics
• Neuroinformatics
• Social informatics

Information and society

• Information society
• Censorship
• Copyright
• Freedom of Information Act
• Information access
• Intellectual freedom
• Intellectual property
• Literacy
• USA PATRIOT Act
• Open source
• Privacy
• Cultural studies
• Technological determinism
• Groupware
• Human-computer interaction
• Information ethics
• Usability engineering/ User-centered design

Library operations and management

Library management –

• Five laws of library science
• Information
• Information literacy
• Knowledge management

Research methods

• Bibliography
• Digital reference services
• Genealogy
• Reference works
• Library reference desk
• Reference interview
• Research

Organizing and searching Wikipedia

• Wikipedia resources for researchers
• Wikipedia:Categorization
• Wikipedia:Citing Wikipedia
• Wikipedia:Common words, searching for which is not possible
• Wikipedia:How to explore Wikipedia
• Wikipedia:Naming conventions (and its subpages)
• Wikipedia:Searching
• Wikipedia:WikiProject Fact and Reference Check

Selection and acquisition of library materials

• Children's literature
• Information explosion
• ISBN
• ISSN
• Library acquisitions
• Library collection development
• Literature
• Public Lending Right
• Young adult literature

Preservation

Preservation

• Archival science
• Archive
• Archivist
• Art conservation and restoration
• Conservation
• Curator
• Digital preservation
• Film preservation
• Historic preservation
• Library binding
• Mass deacidification
• Preservationist
• Slow fire

Other library services and processes

• Bookmobile
• Interlibrary loan
• Library circulation
• Library portal
• Library technical services
• RFID
• Reference management software

Politics of library science

• Government information
• REFORMA

Legal issues

• Censorship
• Copyright
• Intellectual freedom
• Intellectual property
• Intellectual property rights
• Intellectual freedom
• Legal deposit
• Library Bill of Rights
• Open access (publishing)
• Public lending right
• Serials crisis

Laws

• Children's Internet Protection Act
• Digital Millennium Copyright Act
• Freedom of Information Act
• Patriot Act
• USA PATRIOT Act

Legal precedents

• New York Times Company v. Tasini

Social issues

• Decreased funding for established libraries
• Digital divide
• Digitization
• Education for librarianship
• Information access
• Information and communication technologies (ICT's)
  • Sustainability and ICT's
• Information explosion
• Information policy
• Information literacy
• Information Society
• Literacy
• Remote access

Education and training

Education for librarianship –

• List of I-Schools

Academic courses in library science

• Collection management
• Cataloging and classification
• Database management
• Information architecture
• Information systems and technology
• Knowledge management
• List of Library Science schools
• Management
• Preservation
• Reference
• Research methods
• Statistics

Professional organizations

• American Association of School Librarians
• American Library Association
• Australian Library and Information Association
• Canadian Library Association
• Association for Library Service to Children
• Association of Research Libraries
• International Federation of Library Associations (IFLA)
• Public Library Association
• Special Libraries Association

Non-Profit organizations

• Librarians Without Borders
• Bibliothèques Sans Frontières
• Bibliothécaires Sans Frontières
• African Library Project
• Friends of Libraries

Notable people in library science

• List of librarians
• Librarians in popular culture
• Sanford Berman
• Daniel J. Boorstin
• William Warner Bishop
• Lee Pierce Butler
• John Cotton Dana
• Melvil Dewey
• John Fiske (philosopher)
• Michael Gorman
• Seymour Lubetzky
• Eric Moon
• Paul Evan Peters
• S. R. Ranganathan
• Jesse Shera
• Howard D. White