Steven John Wilson (born 3 November 1967) is an English musician and record producer, most associated with the progressive rock genre. Currently a critically acclaimed successful solo artist, he is well known as the founder, lead guitarist, singer and songwriter of the band Porcupine Tree, as well as being a member of several other bands. He has also worked with artists such as Opeth, King Crimson, Pendulum, Jethro Tull, XTC, Yes, Marillion, Orphaned Land and Anathema.

Wilson is a self-taught producer, audio engineer, guitar and keyboard player, playing other instruments as needed, including bass guitar, autoharp, hammered dulcimer and flute. He currently lives in Hemel Hempstead, the town he grew up in, but has also spent time living in London and Tel Aviv, Israel, although he does not hold a residence in Tel Aviv anymore.

He has been four times nominated for the Grammy Awards, two times with Porcupine Tree, with his collaborative band Storm Corrosion and as a soloist on one occasion.