| Marin Niculescu | |
| Birth Date: | 4 March 1923 |
| Birth Place: | Bucharest, Romania |
| Death Place: | Bucharest, Romania |
Marin Niculescu (4 March 1923 - 2 May 2014) was a Romanian cyclist. He competed in the individual and team road race events at the 1952 Summer Olympics and placed 41st and 12th, respectively.[1] Niculescu won the Tour of Romania in 1951 and two stages of the Tour de Pologne in 1949, placing second overall.[2]