Peter Warren may refer to:

• Sir Peter Warren (Royal Navy officer) (c. 1703–1752), British naval officer
• Peter Warren (cricketer) (born 1953), Australian cricketer
• Peter Warren (radio) (born 1939), Canadian investigative journalist and radio host
• Peter Warren (archaeologist) (born 1938), leading scholar of the Aegean Bronze Age
• Peter Warren (journalist) (born 1960), English investigative freelance journalist and writer
• Peter Warren (American musician) (born 1935), American jazz bassist
• Peter Warren (New Zealand musician) (born 1958, New Zealand drummer