Martins Okechukwu Justice, popularly known by his stage name J. Martins, is a Nigerian musician, singer, songwriter and producer. He is best known for his song "Oyoyo" "Jupa" and "Good Or Bad". J. Martins is also known to have featured on the song by P-Square, "E No Easy". He has also featured Phyno, YCEE, Fally Ipupa, DJ Arafat, Koffi Olomide, Timaya.