The following is a detailed discography of all singles released by country music singer Willie Nelson. A total of 25 Nelson singles have reached number one on music charts. His 1982 single, "Always on My Mind", reached the top 10 of the Billboard Hot 100. Two years later, his duet with Julio Iglesias, "To All the Girls I've Loved Before", became a worldwide hit. His albums and singles were successful in many countries, especially New Zealand, Australia and some European countries.