Lupus Hellinck (also Wulfaert) (1493 or 1494 – c. 14 January 1541) was a Flemish composer of the Renaissance. He was a prominent composer of masses, as well as German chorales and motets. Although he was a Roman Catholic all of his life, his music shows evidence of sympathy for the Protestant Reformation, and three of his motets—including a famous setting of In te domine speravi—were probably inspired by the prison writings of the martyred reformer Girolamo Savonarola.