What is "guarini"

Guarini is a surname. Notable people with the surname include:

• Giovanni Battista Guarini (1538–1612), Italian poet and diplomat
• Anna Guarini, Contessa Trotti, (1563–1598), Italian virtuoso singer of the late Renaissance
• Guarino Guarini (1624–1683), Italian architect and Theatine priest
• Justin Guarini (born 1978), American singer who rose to fame on the television show American Idol