Herraiz or Herráiz () is a Spanish surname of Basque origin. Notable people with the surname include:
Elena Herraiz Medina (born 1992), known as Linguriosa, Spanish YouTuber, linguist and teacher Itmar Esteban Herraiz (born 1983), Spanish cyclist Pablo Clavería Herráiz (born 1996), Spanish footballer Rubén Herráiz Alcaraz (born 1993), known as Rufo, Spanish footballer