Susan Lacy may refer to:

• the creator of American Masters
• Suzanne Lacy (born 1945), American artist and educator

• CallAir A-9
• Call Aircraft Company
• Callaloo
• Callaloo (disambiguation)
• Callaloo (journal)
• Callalu
• Callaly
• Callan, County Kilkenny
• Callander
• Callander and Oban Railway
• Callander, Ontario
• Callandor
• Call-and-response
• Call and response
• Call and Response
• Call and response (disambiguation)
• Call and response (music)
• Callanish
• Callan (TV series)
• Callan (TV show)
• Callao
• Callao Cave
• Callao, Chile
• Callao Constitutional Province
• Callao Department