日本电气股份有限公司（NEC Corporation），简称NEC，是日本的一家跨国信息技术公司，总部位于日本东京港区(Minato-Ku)。NEC为商业企业、通信服务以及政府提供信息技术（IT）和网络产品。在台湾被称为恩益禧，是日本一家跨国信息技术公司，总部位于东京港区。

NEC日本电气股份有限公司的经营范围主要分成三个部分：IT解决方案、网络解决方案和电子设备。

NEC日本电气的IT解决方案主要是向商业企业、政府和个人用户提供软件、硬件和相关服务。

NEC日本电气的网络解决方案主要是设计和提供宽带系统、移动和无线通信网络系统、移动电话、广播和其他系统。

NEC日本电气的电子设备包括半导体、显示器以及其他的电子器件。

NEC日本电气还生产面向国际市场的Versa系列笔记本电脑和面向日该国内市场的Lavie系列笔记本电脑。NEC还是地球模拟器（Earth Simulator)的制造商，当时是最快的超级计算机。NEC日本电气是住友集团（Sumitomo Group)的成员。2012年在财富世界500强排行榜中排名第271位。2014年12月15日被瑞典的斯德哥尔摩国际和平研究所评为2013年世界武器销售额前100名企业之一。

On 17 July 1899, Nippon Electric Company, Limited (renamed NEC Corporation, effective April, 1983, both expressed as NEC hereafter) Japan's first joint venture with foreign capital, was established by Kunihiko Iwadare in association with the U.S. firm Western Electric Company (presently Alcatel-Lucent).

The basic aim of the new company, expressed in the slogan “Better Products, Better Service,” was to carry out the promise to provide its customers with world-class products and dependable follow-up service. The notion of follow-up service didn't take root among Japanese businesses until a full half-century later, whereas NEC had from the beginning embraced a concept that developed into what we now call Customer Satisfaction (CS).

World and domestic firsts in technology and research development, made possible by managerial innovation and backed by establishment, improvement and reform of its various personnel systems, as well as the early mounting of environmental projects, make it possible to say that NEC's history has been marked by constant innovation for more than a hundred years. NEC is empowered by the DNA of innovation.

NEC brings together and integrates technology and expertise to create the ICT-enabled society of tomorrow. NEC collaborates closely with partners and customers around the world, orchestrating each project to ensure all its parts are fine-tuned to local needs.

Every day, our innovative solutions for society contribute to greater safety, security, efficiency and equality, and enable people to live brighter lives.

Societies everywhere are faced with formidable challenges, such as safeguarding sustainable energy supplies, providing clean water, dealing with population growth and demographic change, improving emergency response, and raising quality of life. To address these issues, there is need for a new standard of intuitive, integrated ICT—one that makes possible the society of tomorrow.

For more than a century, NEC has been at the leading edge of technology that enriches people's lives. Today, as a major provider of ICT solutions for society, NEC collaborates closely with partners and customers around the world, bringing together sensors, computing, networking and analysis. NEC applies this expertise to create active data solutions that predict, monitor, and solve challenges, respond intelligently to adverse events, and turn unseen information into actionable wisdom.

NEC carefully oversees each project, orchestrating it to ensure that all parts work in harmony and are fine-tuned to resonate with local needs. NEC matches human and technological resources to ensure our solutions deliver greater safety, security, efficiency and equality, and remain relevant during and beyond the transformation they bring about. These are the foundations on which governments can build prosperous communities and enterprises can innovate and grow, enabling people to live brighter lives.

NEC summarizes this approach in our business message: Orchestrating a brighter world.