Penny Lapsang Rimbaud (born Jeremy John Ratter, 8 June 1943) is a writer, poet, philosopher, painter, musician and activist.

He was a member of the performance art groups EXIT and Ceres Confusion, and in 1972 was co-founder of the Stonehenge Free Festival, together with Phil Russell aka Wally Hope.

Until 2000 Rimbaud devoted himself almost entirely to writing, returning to the public platform in 2001 as a performance poet working with Australian saxophonist Louise Elliott and a wide variety of jazz musicians under the umbrella of Last Amendment.

Rimbaud's written works include the originally self-published Reality Asylum,[9] a vitriolic attack on Christianity that appeared in heavily revised form on Crass' 1978 debut album The Feeding of the 5000, as a longer single[10] and as a 45-minute spoken-word monologue.

Other writings include: Rocky Eyed, an extended poem attacking prime minister Margaret Thatcher and her government following the 1982 Falklands War, which was recorded as the Crass album Yes Sir, I Will;[11] The Death of Imagination (a "musical drama in 4 parts"); and The Diamond Signature (published by AK Press).