Giovanni Ansani (February 11, 1744 - July 15, 1826) was an Italian tenor and composer. In 1770, he was singing at Copenhagen. About 1780 he came to London, where he at once took the first place; but, being of a most quarrelsome temper, he threw up his engagement on account of squabbles with soprano castrato Francesco Roncaglia. He returned the next year with his wife, Maccherini, who was not successful. He sang at Florence in 1784, at Rome the autumn of the same year, and elsewhere in Italy; and finally retired to Naples at the age of 50, where he devoted himself to teaching singing.