Ray William Johnson (born August 14, 1981) is an American video blogger, producer, and actor best known for his YouTube series Equals Three, in which he provides commentary on viral videos. Many of the videos featured on Equals Three are noted to have received an additional boost of popularity. In February 2011, one industry publication noted that Johnson had six of the top twenty most watched videos of the month. In early September 2012, Johnson had accumulated nearly 2 billion video views. As of December 2013, the RayWilliamJohnson YouTube channel has over 10 million subscribers, and over 2.5 billion video views.

In January 2011, Johnson launched a collaborative YouTube channel called “YourFavoriteMartian” (YFM), which features animated music videos. The songs are performed by a virtual band of four fictional cartoon characters: PuffPuff Humbert (vocals, voiced by Johnson), DeeJay (turntables), Axel Chains (drums), and Benatar (vocals, guitar/keytar/bass/piano, voiced by Jesse Cale). Johnson writes lyrics, raps, sings, composes beats, and sometimes collaborates with other musicians to produce the songs.