Castronovo or Castronuovo may refer to:

• Castronovo di Sicilia, a comune in Sicily
• Castronuovo di Sant'Andrea, a comune in Basilicata, Italy
• Charles Castronovo, (born 1975), American tenor
• Deen Castronovo (born 1964), American drummer and singer
• Raúl Castronovo (born 1949), Argentine retired footballer
• Castronovo Chocolate, an American craft chocolate maker

• Leptozestis parasica
• Leptozestis perinephes
• Leptozestis phylactis
• Leptozestis polychroa
• Leptozestis psarotricha
• Leptozestis psoralea
• Leptozestis pygaea
• Leptozestis sedula
• Leptozestis selenura
• Leptozestis spodoptera
• Leptozestis strophicodes
• Leptozestis tephras
• Leptozestis tephronota
• Leptozestis toreutica
• Leptozestis tropaea
• Leptozestis valida
• Leptozestis xenonympha
• Leptrichillus
• LEP tunnel
• Leptura
• Leptura abdominalis
• Leptura achilleae
• Leptura aethiops
• Leptura annularis
• Leptura anthracina