Smosh is an American sketch comedy YouTube channel co-founded by Ian Hecox and Anthony Padilla. In 2002, Padilla created a website named "smosh.com" for making flash animations, and he was later joined by Hecox. They began to post videos on Smosh's YouTube channel in the autumn of 2005 and quickly became one of the most popular channels on the site. As of June 2021, the Smosh channel has over 9.9 billion views and over 25.1 million subscribers, putting it just outside of the top 9,000 most subscribed channels on YouTube.Since 2012, the Smosh brand has expanded to consist of multiple channels, including a Spanish-language channel (ElSmosh), a channel focused on video gaming content (Smosh Games), and a variety channel (Smosh Pit). The sketches have also included more actors. Padilla left Smosh in June 2017 to pursue independent ventures. The Smosh channel has experienced three different spans as the most subscribed YouTube channel. The first period spanned from May to June 2006, the second from April 2007 to September 2008, and the third span from January to August 2013.On November 6, 2018, Smosh's parent company Defy Media abruptly closed without warning. Six days later, the Smosh cast released a video announcing that production of Smosh, Smosh Pit, and Smosh Games content was still ongoing, and that existing videos would be finished and other content would be released independently by Smosh on their YouTube channels. They subsequently joined Mythical Entertainment after their company was purchased by Rhett and Link on February 22, 2019. As of 2019, the channel's cast has a core group of Hecox, Courtney Miller, Damien Haas, Olivia Sui, Keith Leak Jr., Noah Grossman and Shayne Topp who run the majority of content.
On September 2, 2020, they launched a Twitch channel named after one of their YouTube channels, Smosh Games.