"What Makes a Man" is a song by Irish boy band Westlife. It was released as the third single from their second studio album, Coast to Coast (2000). It was their first single not to peak at number one on the UK Singles Chart, being beaten to the Christmas number one by "Can We Fix It?", the theme to the cartoon series, Bob the Builder (which managed to peak at number three in Ireland). It also debuted and peaked at number two in Ireland, held off the top spot by Eminem's song "Stan".
The song was the 39th best selling single of 2000 in the UK, and received a gold sales certification in the UK for over 400,000 copies sold.