Public Image Ltd (abbreviated and stylized as PiL) are an English post-punk band formed by lead vocalist John Lydon (previously, as Johnny Rotten, lead vocalist of the Sex Pistols), guitarist Keith Levene (a founding member of the Clash), bassist Jah Wobble, and drummer Jim Walker in May 1978. The group's line-up has changed frequently over the years; Lydon has been the sole constant member.

Following Lydon's departure from the Sex Pistols in January 1978, he sought a more experimental "anti-rock" project and formed PiL in June of that year. PiL released their debut studio album First Issue (1978), creating an abrasive, bass-heavy sound that drew on dub, noise, progressive rock and disco. PiL's second studio album Metal Box (1979) pushed their sound further into the avant-garde, and is often regarded as one of the most important albums of the post-punk era.

By 1984, Levene, Wobble and Walker had departed and the group was effectively a solo vehicle for Lydon, who moved toward a more accessible sound with the commercially successful studio albums This Is What You Want... This Is What You Get (1984) and Album (1986). After a late 1990s hiatus, Lydon reformed the group in 2009 and has released several further albums, including What the World Needs Now... (2015).