Robert Parr (1921–2017) was an American theoretical chemist.
Robert Parr or Bob Parr may also refer to:
Erle Stanley Gardner (1889–1970), author who wrote under this name Bob Parr (TV producer) (born 1957), English-born New Zealand producer Bob Parr, animated film character (also known as Mr. Incredible) from The Incredibles Robert Parr, song contributor to American band The Bottle Rockets