Spiral Mercury is a live album by Pharoah & the Underground, featuring saxophonist Pharoah Sanders, trumpeter Rob Mazurek and drummer Chad Taylor of the Chicago Underground Duo, along with percussionist Mauricio Takara of the São Paulo Underground, bassist Matthew Lux of the Pulsar Quartet, and multi-instrumentalist Guilherme Granado. It was recorded on August 11, 2013, at the Jazz em Agosto Festival in Lisbon, and was released in 2014 by Clean Feed Records.

Rob Mazurek is an American composer, cornetist, and visual artist based in Chicago.