Alan Barrett may refer to:

• Alan Barrett (economist), Irish economist
• Alan Barrett (rower) (1912–1961), British Olympic rower
• Alan Barrett (costume designer) (1938–1991), nominated for the Academy Award for Costume Design

• Paleolithic continuity
• Paleolithic Continuity
• Paleolithic Continuity theory
• Paleolithic Era
• Paleolithic in South Asia
• Paleolithic Venus
• Pale-olive greenbul
• Pale Olofsson
• Paleologi
• Paleologo Zaccaria
• Paleologus dynasty
• Paleomagnetic
• Paleomagnetics
• Paleontographer
• Paleontography
• Paleontological Institute
• Paleontological institute of russian academy of sciences
• Paleontological Institute of Russian Academy of Sciencies
• Paleontological Institute, Russian Academy of Sciences
• Paleontological museum of uppsala university
• Paleontological Research Institution
• Paleontological Site Arroio Cancela
• Paleontological Site Bela Vista
• Paleontological Site Jazigo Cinco
• Paleontological Site Largo Padre Daniel Cargin