Ivanoff (feminine: Ivanoffa) is a surname. Notable people with the surname include:
Serge Ivanoff (1893–1983), Russian painter Victor Ivanoff (1909–1990), Russian-born South African painter and cartoonist Juan Carlos Bacileff Ivanoff (born 1949), Argentine politician Nicolas Ivanoff (born 1969), French pilot and flying instructor Alexandre Barbera-Ivanoff (born 1973), French painter Jonathan Ivanoff (born 1989), Argentine footballer Eugene Nicolaievich Ivanoff (), imposter to the Romanov family Nick Ivanoff (), American transportation businessman
See also Ivanoff Head, a small rocky headland, Vincennes Bay, Antarctica Ivanov (disambiguation)