Other
- Jeff Smith (comics) (born 1960), creator of the comic book Bone
- Jeffrey Paul Smith (born 1956), Illinois attorney
- Jeff Smith (meteorologist) (born 1981), weekend editions of Eyewitness News This Night
- Jeff Smith (musician), comedy musician from the band Raymond & Scum
- Jeff Smith (TV personality) (1939–2004), chef aka the Frugal Gourmet
- Jeffrey H. Smith, former professor of mathematics at Purdue University, Indiana
- Jeffrey M. Smith, activist and politician from Iowa.
- Jeffrey W. Smith, biologist at the Burnham Institute
- Jeffrey Chipps Smith, American art historian
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