Megvii (Chinese: 旷视; pinyin: Kuàngshì) is a Chinese technology company that designs image recognition and deep-learning software. Based in Beijing, the company develops artificial intelligence (AI) technology for businesses and for the public sector.

Megvii is the largest provider of third-party authentication software in the world, and its product, Face++, is the world's largest computer vision platform. In 2019, the company was valued at $USD 4 billion.

As of 2024, the company operates the world's largest computer vision research institute.

The company has faced U.S. investment and export restrictions due to allegations of aiding the persecution of Uyghurs in China.

The company was founded in Beijing with Megvii standing for "mega vision." It was started by Yin Qi and two college friends.

The company's core product, Face++, launched in 2012 as the first online facial recognition platform in China. In 2015 Megvii created Brain++, a deep-learning engine to help train its algorithms.

Backed by GGV Capital, Megvii raised $100 million in 2016, $460 million in 2017 and $750 million in May 2019.

In 2017, Megvii marketed authentication and computational photography functions to smart phone companies and mobile application developers, then smart logistics. Megvii's AI-empowered products include personal IoT, city IoT and supply chain IoT. In 2017 and 2018, Megvii beat Google, Facebook, and Microsoft in tests of image recognition at the International Conference on Computer Vision.