Marques Keith Brownlee (born December 3, 1993), most famously known as MKBHD, is an American YouTuber, influencer, and professional ultimate frisbee player. He is best known for his technology-focused videos, providing in-depth reviews of smartphones, headphones, and other consumer electronics. As of July 2025, his main YouTube channel has over 20 million subscribers and billions of views. In addition to his main channel, Brownlee also runs several other channels, including WVFRM Podcast, Auto Focus, and The Studio. He also co-hosts the technology podcast "Waveform: The MKBHD Podcast".
Brownlee's influence extends beyond YouTube, impacting how companies present their products. He has interviewed prominent figures like Barack Obama, Bill Gates, and Mark Zuckerberg. In 2024, he joined Ridge, an accessories company, as a board member and chief creative partner. Recently, Brownlee was one of the first to test drive Rivian Automotive's R2 model, posting a review on his AutoFocus YouTube channel in February 2026. Also in February 2026, Brownlee sparked debate regarding the safety and long-term risks of silicon-carbon smartphone batteries in one of his videos. He also had a hands-on experience with Samsung's Project Moohan, a prototype of Samsung's Vision Pro competitor in January 2025.