Peter Foster (born 1962) is an Australian conman and convicted criminal.

Peter Foster may also refer to:

• Peter Foster (Australian rules footballer) (born 1960), former Australian rules footballer
• Peter Foster (canoeist) (born 1960), Australian Olympic flatwater canoeist
• Peter Foster (cricketer) (1916–1994), English cricketer
• Peter Foster (journalist), correspondent for The Daily Telegraph and The Sunday Telegraph and Financial Times
• Peter Foster (judge), former English High Court judge
• Peter Foster (politician), member of the Western Australian Legislative Council
• Peter Foster (rugby league), rugby league footballer of the 1950s for Great Britain and Leigh
• Peter le Neve Foster (1809–1879), English barrister and mathematician