Christopher MacFarlane, better known as Macka B, (born 1966) is a British-born Jamaican reggae artist, performer and activist with a career spanning thirty years and one of Britain's most influential dancehall DJs.

[1] As a practicing Rastaman, Macka B's music is based around the political and spiritual message of the religion, with an often light and humorous touch.

Working with the Mad Professor, he combined dancehall and dub styles of reggae, although he has avoided a more commercial crossover approach.

When the factory closed and he was laid off, he began to devote more time to practising his toasting skills, influenced by earlier Jamaican toasters U-Roy, I-Roy, Big Youth, and especially Prince Far I.

[1][3] After this Macka B began to feature on the radio as well as perform with local band Pre-Wax, who had a hit with "Maggie's Letter".

[3][6] Around the same time, a tape of his performance in a sound-system battle between the Jah Wasifa sound system and Saxon Studio International ended up with Fashion Records in London.

[citation needed] In 2012, he appeared as a special guest star on the track Jadna ja (Poor me) by the Serbian folk-world music-rock band Zlatopis.