Nestor Alexander Haddaway is a Trinidadian-born German singer best known for his 1993 hit single "What Is Love", which reached number 1 in 13 countries.

"What Is Love" is a song by Trinidadian-German singer Haddaway, released as his debut single from his debut album, The Album (1993). The song, both written and produced by Dee Dee Halligan and Karin Hartmann-Eisenblätter, was released by Coconut Records in January 1993. It was a hit across Europe, becoming a number-one single in at least 13 countries and reaching number two in Germany, Sweden and the United Kingdom. Outside Europe, the single peaked at number 11 in the United States, number 12 in Australia, number 17 in Canada, and number 48 in New Zealand.