Miron Nicolescu (Romanian: [mi'ron niko'lesku]; August 27, 1903 – June 30, 1975) was a Romanian mathematician.
Born in Giurgiu, he attended the Matei Basarab High School in Bucharest.
In 1928, he completed his doctoral dissertation, Fonctions complexes dans le plan et dans l'espace, under the direction of Paul Montel.
Upon returning to Romania, he taught at the University of Cernauti until 1940, when he was named professor at the University of Bucharest.
In 1936, he was elected an associate member of the Romanian Academy, and, in 1953, full member.
In 1963, he became director of the Institute of Mathematics of the Romanian Academy.
From 1966 until his death, he served as President of the Romanian Academy.
At the International Congress of Mathematicians held in Vancouver, British Columbia, Canada in 1974, he was elected Vice-President of the International Mathematical Union, a position he held from 1975 to 1978.