John Joseph Wardle (born 11 August 1958), known by the stage name Jah Wobble, is an English bass guitarist, singer, poet and composer. He became known to a wider audience as the original bass player in Public Image Ltd (PiL) in the late 1970s and early 1980s, but left the band after two albums. Following his departure from PiL, he developed a successful solo career. In 2012, he reunited with fellow PiL guitarist Keith Levene for Metal Box in Dub and the album Yin & Yang. Since 2013, he has been one of the featured pundits on Sunday morning's The Virtual Jukebox segment of BBC Radio 5 Live's Up All Night with Dotun Adebayo. His autobiography, Memoirs of a Geezer, was published in 2009. His daughter is music producer Natalie Wardle.