Joseph Frizell (13 March 1832 – 4 May 1910) was an American engineer.
He is notable for having independently derived the fundamental equations to describe the velocity of a shock wave (Water hammer equations) in 1898 and for his book Water-Power in 1901, which was the first practical book on hydraulics in the USA.
I was a major milestone in the engineering knowledge, as Schutze wrote ?As an hydraulic engineer, Frizell was prominent, and his book, Waterpower, filled a definitive need in the technology of that day.?