Manfred Siebald (born 26 October 1948 at Alheim-Baumbach) is a German singer-songwriter and lecturer in American studies in Mainz.
Siebald is best known as a Christian singer-songwriter, who writes and speaks on contemporary worship music. His songs of the genre Neues Geistliches Lied (NGL) have gained a firm place in the songbooks of many different Christian denominations and are sung in fellowships and youth groups throughout Germany.