Robert Pennock may refer to:

• Robert Pennock (politician) (born 1936), Canadian politician
• Robert T. Pennock, philosopher

• Extended Projection Principle
• Extended Random
• Extended random
• Extended-range basses
• Extended real number system
• Extended regular expression
• Extended scattered disc objects
• Extended school year
• Extended (Solar Fields album)
• Extended Stay
• Extended StayAmerica
• Extended Stay Canada
• Extended-technique
• Extended-techniques
• Extended ternary Golay code
• Extended trading hours
• Extended Versions (The Smithereens album)
• Extended Versions (The Smithereens live album)
• Extended Wansung
• Extended Wigner's friend
• Extensibility pattern
• Extensible 3D Graphics
• Extensible Data Notation
• Extensible Device Metadata
• Extensible resource identifier