Jeffrey Walker (born 25 March 1968) is a bass guitarist and vocalist from Windle, St Helens, UK. He is best known for his work with the death metal / grindcore band Carcass for which he is also the main lyricist. Before Carcass, he played in the punk band Electro Hippies. After the demise of Carcass, he went on to form Blackstar with two former Carcass bandmates.