Sergiu Florin Nicolaescu (; 13 April 1930 – 3 January 2013) was an Romanian director, actor, and politician who was part of the Romanian Senate from 1992 throught 2011. He was known for his movies such as Mihai Viteazul, Dacii, and in Un comisar acuză.
Nicolaescu was born on April 13, 1930 in Târgu Jiu, Romania. He studied at Polytechnic University of Bucharest. He was raised in Timișoara, Romania. Nicolaescu died on January 3, 2013 in Bucharest, Romania from cardiac arrest resulting from respiratory failure which was caused by abdomen infection-related surgical complications, aged 82.