Sorie Ibrahim Koroma (March 18, 1930 – April 30, 1994) commonly known as S.I.
Koroma is a former Sierra Leonean politician, labor activist, and one of the founding members of the All People's Congress political party.
He served as first Vice President of Sierra Leone from April 19, 1971 to retirement on November 28, 1985 under president Siaka Stevens.
Sorie Ibrahim Koroma was a close personal friend of president Siaka Stevens; and was one of the closest and must trusted political advisors to president Stevens.
To date, S.I.
Koroma is widely considered the most influential vice president in Sierra Leone's history.