智能城市（英语：Smart City），是把新一代信息技术充分运用在城市的各行各业之中的基于知识社会下一代创新（创新2.0）的城市信息化高级形态，实现信息化、工业化与城镇化深度融合，有助于缓解“大城市病”，提高城镇化质量，实现精细化和动态管理。关于智能城市的具体定义比较广泛，目前在国际上被广泛认同的定义是，智能城市是新一代信息技术支撑、知识社会下一代创新（创新2.0）环境下的城市形态，强调智能城市不仅仅是物联网、云计算等新一代信息技术的应用，更重要的是通过面向知识社会的创新2.0的方法论应用，构建用户创新、开放创新、大众创新、协同创新为特征的城市可持续创新生态。智能城市通过在人力和社会资本，以及在交通和信息通讯基础设置上的投资来推动可持续经济增长和高生活质量，并且通过参与式的管理对上面的资源及自然资源进行科学的管理。一些智能城市建设的先行城市也越来越突出以人为本的可持续创新，比如欧盟启动了面向知识社会创新2.0的Living Lab计划，致力于围绕市民需求将城市建设为各方共同参与的开放创新空间，比如维也纳大学对城市体系评价的六个指标，即智能的经济、智能的运输业、智能的环境、智能的居民、智能的生活和智能的管理等六个方面。目前，智能城市的建设是信息技术、城市规划等领域的热点问题。

A smart city is an urban development vision to integrate multiple information and communication technology (ICT) solutions in a secure fashion to manage a city’s assets – the city’s assets include, but not limited to, local departments information systems, schools, libraries, transportation systems, hospitals, power plants, water supply networks, waste management, law enforcement, and other community services. The goal of building a smart city is to improve quality of life by using technology to improve the efficiency of services and meet residents’ needs. ICT allows city officials to interact directly with the community and the city infrastructure and to monitor what is happening in the city, how the city is evolving, and how to enable a better quality of life. Through the use of sensors integrated with real-time monitoring systems, data are collected from citizens and devices - then processed and analyzed. The information and knowledge gathered are keys to tackling inefficiency.