George IV, Brixton was a public house and concert and dance venue at 144 Brixton Hill, in Brixton, London. It was also sometimes known as George Four. At the junction with Waterworks Road, the venue in 2007 became the Southside Bar and later the Music Bar. Following its closure in 2012, plans were submitted by Tesco to open a convenience store at the premises.
The Basement Jaxx club night was held in the rear at the George IV from 1994, amongst other venues. Basement Jaxx attribute a significant part of their style to their formative times at the George IV; Simon Ratcliffe explained that the venue is "where our chaos comes from... there was always feedback, records jumping, things going wrong—but people cheered 'cause there was a real vibe; it wasn't clinical". During the early half of the 2000s, there were regular club events at the George IV, on Thursday, Friday and Saturday nights, and on Saturday and Sunday during the day.