Lorenz Nikolai Achté (25 May 1835 in Pori – April 18, 1900 in Helsinki) was a Finnish opera singer, composer, conductor and music teacher. He was one of the Finnish Opera's first artists, together with his wife Emmy Achté. He established a cantor-organist school, Helsinki Church Music School, in Helsinki in 1882.
His daughter Aino Ackté became a famous opera singer.