Linus Gabriel Sebastian (born August 20, 1986) is a Canadian YouTuber, presenter, technology demonstrator, and entrepreneur. He is best known for creating and hosting the technology-focused YouTube channel Linus Tech Tips (LTT). Starting in November 2008, LTT has grown to over 16 million subscribers and 9.2 billion views. Across all of his channels, Sebastian has over 32 million subscribers and more than 12 billion views.
Sebastian is the founder of Linus Media Group (LMG), which he formally launched in 2013. He served as the CEO of LMG until July 1, 2023, when he transitioned to the role of Chief Vision Officer to concentrate on long-term strategy and creative direction. LMG's revenue streams include LTTStore.com (merchandise), AdSense (YouTube ad revenue), sponsorships, and Floatplane, LMG's proprietary paid video platform. Recent content includes a house tour documenting unfinished smart home projects.