Abello or Abelló is a Spanish and Italian toponymic surname, and it's named after Avella in Italy. The name is more common in Spain today. Notable people with the surname include:
Antònia Abelló (1913–1984), Catalan political activist, journalist, feminist, pianist and writer Jorge Enrique Abello (born 1968), Colombian actor José Abello Silva, Colombian drug trafficker Juan Abelló (born 1941), Spanish businessman and art collector Montserrat Abelló i Soler (1918–2014), Spanish poet and translator
See also Abelló Museum, art museum in Catalonia, Spain