Nolan Porter is an American soul singer and songwriter, best known for his 1972 hit song, "If I Could Only Be Sure". His musical style is characterized by a blend of soul, funk, and R&B, with his emotive vocals being a distinct feature. Porter's contribution to the Northern Soul movement in the UK has been significant, with his songs remaining popular on the scene. Despite a brief career that spanned the late 1960s to early 1970s, his works continue to be influential in the genre.