CLT

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• Canadian Learning Television, a former name of Oprah Winfrey Network
• Capitol Land Trust, Washington, USA
• Compagnie Luxembourgeoise de Radiodiffusion, later RTL Group, Luxembourg media company
• Culture Commission or "CLT Commission" affiliated with UNESCO

• Classic Learning Test, an American standardized test
• Cognitive load theory, in pedagogical psychology
• Communicative language teaching, an approach

• Charitable lead trust, a form of charitable trust in the United States
• Community land trust, a housing model
• Consolidation of Labor Laws, a 1943 Brazilian law ({{langx|pt|Consolidação das Leis do Trabalho|links=no}})

• Chronic lymphocytic thyroiditis, an autoimmune disease
• Clinical Laboratory Technologist, a healthcare professional
• Clot lysis time, a result of the OHP test for blood clots
• Cognitive load theory, in psychology

• Charlotte Douglas International Airport, North Carolina, US (IATA:CLT)
• Kozhikode railway station, Kerala, India

• Central limit theorem, in probability and statistics
• Construal level theory, a statistical social theory
• Central location test, a marketing research technique
• Cross-laminated timber, an engineered wood

• Chile Standard Time, a time zone (UTC−4)
• Charlotte, North Carolina

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