Yusuf Oluwo Gbolaga professionally known as YKB (born 6 March 1995) is a Nigerian Afropop singer and songwriter. He debuted his first single titled “Swaggu” in 2019 and gained popularity with the hit single “San Siro”.

Yusuf Oluwo was born on 6 March 1998 in Lagos, Nigeria where he spent most of his childhood and early adulthood.