Iwa K (born Iwa Kusuma, 25 October 1970) is Indonesian rapper, singer and songwriter. He is also the best selling Indonesian rapper to date. He has won an Indonesian Music Award for Best Rap Performance in 1999.

His debut solo album, Ku Ingin Kembali, included in the list at #117 Rolling Stone Indonesia magazine’s “150 Greatest Indonesian Albums of All Time”. One of his songs, “Bebas” (1995) ranked #36 in Rolling Stone’s “150 Greatest Indonesian Songs of All Time” list.