Lorenzen may refer to
People Lorenzen (surname) Lorenzen Wright, American basketball player
Places Austria Sankt Lorenz, Upper Austria Sankt Lorenzen am Wechsel, Styria Sankt Lorenzen bei Knittelfeld, Styria Sankt Lorenzen bei Scheifling, Styria Sankt Lorenzen im Mürztal, Styria
Italy St. Lorenzen South Tyrol
United States Lorenzen, Mississippi, an unincorporated community
Other Lorenzen Group, paramilitary group of Danish collaborators, active 1944-1945 , American missile range instrumentation ship
See also Lorenzo (disambiguation)