Carl Mentz Rynning-Tønnesen (13 September 1924 – 28 April 2013) was a Norwegian police chief.
He was born in Jevnaker as a son of Christian Wilhelm Rynning-Tønnesen (1893–1963) and pharmacist Sigrid Jacobsen (1896–1961), and grew up in Kristiansand where his father was police chief.
He was a nephew of Sverre Rynning-Tønnesen.
In 1957 he married Grete Luhr.
Their son Christian Rynning-Tønnesen is a leading corporate executive.He graduated with the cand.jur.
degree from the University of Oslo in 1949.
He was hired as a police superintendent in Bergen in 1960 and Kristiansand in 1963.
He then served as police inspector in Bergen from 1968, then police chief of Kristiansand from 1979 to 1992.