Abstract：Artificial IntelligenceAIapplication in Library Systems in Iran A taxonomy study With introducing and developing AI logicthis science as a branch of computer science could impact and improve all sciences which used computer systemsLIS also could get benefit from AI in many areasThis paper survey applications of AI in library and information science and introduce the potential of library system to apply AI techniquesIntelligent systems have contributed for many librarian purposes like catalogingindexinginformation retrievalreferenceand other purposesWe applied Exploratory Factor AnalysisEFAas a primer method for identification of the most applicable AI techniques categories in LISESs are the most usable intelligent system in LIS which mimic librarian experts behaviors to support decision and managementAI also can utilize in many areas such as speech recognitionmachine translation and librarian robotsIn this study four criteria for the application of AI in the library systems in Iran was considered and it is determined in three area included public servicestechnical servicesand management servicesThendegree of development these services was studied using taxonomy methodThe results showed that most developed Recommender SystemsRMin library systems in Iran and Natural Language ProcessingNLPis the most undeveloped criterionCollection ClassificationThrough intelligent systemssuch as expert systemsimitate the behavior of librariesRetrieval and IndexingFor information retrievalConsulting ServiceIf the expert system imitates the behavior of library experts to support decision-makingThe article explores the application of AI in libraries and information sciencesand introduces the potential of the application of AI technology in the library systemExpert SystemESThe article mentioned that ES is the most commonly used intelligent system in library information scienceLISto imitate the behavior of library experts to support decision-making and managementNLPThe article mentioned that in the Iranian library systemnatural language processingNLPis the least developed standardRobotAI can also be used in many fieldssuch as voice recognitionmachine translationand library robots