Donald D. Lorenzen (January 22, 1920 – May 15, 1980) was a San Fernando Valley funeral director who was a member of the Los Angeles City Council from 1969 to 1977.

[1][3] Lorenzen came from second place in the 1969 primary municipal election to win the Los Angeles City Council District 3 seat in the final vote over Howard W. Speer by 32,387 to 23,888.

Lorenzen's office, which made another complaint to the commission about photos of nude women in the September 1969 issue had to pay a fine of fifty cents a day for the two overdue copies that it kept out of circulation for two weeks.

[7] Fifteen years later, as a city councilman, Lorenzen said he favored a separate Valley government and independent school district, but described a secession move as "almost impossible.

"[8] Lorenzen, a lame-duck member of the City Council in his last month there, helped to push through a plan to upgrade the downtown Los Angeles Central Library instead of building a combined library-retail complex.