Herbert Joseph Wallenstein (August 1, 1917 – February 18, 1996) was an Assistant New York State Attorney General from 1959 to 1979 and the first Bureau Chief of the State Charity Frauds Bureau.

Born in Manhattan to Joseph S. Wallenstein (December 15, 1869 – May 1, 1928), a cigar and leather merchant, and Martha Schallek (May 24, 1884 – January 7, 1969), Herbert Wallenstein's paternal grandmother was Esther Wallenstein(1846-July 8, 1903), the founding president of the Hebrew Infant Asylum, a prominent Jewish orphanage in New York City.

Wallenstein served in the Army during World War II and was honorably discharged in 1946.

In 1957, and again in 1958, Wallenstein was an unsuccessful candidate for Municipal Court Judge in New York's 7th District.

Following the 1958 campaign, he left a private practice when he was appointed an Assistant Attorney General in the office of New York State Attorney General Louis J. Lefkowitz (July 3, 1904 – June 20, 1996).