Meaning and Name Origin
Mireille \m(i)-reille, mire(il)-le\ as a name for girls means "wonderful; peace; prosperous; admire". Mireille is a form of Mira (Latin, Slavic, Hindi). Mireille is also a variation of Mireio (French): from mirar.
Mireille is a somewhat prominent first name for women (#2937 out of 4276, Top 69%) but an unusual surname for both adults and children. (2000 U.S. Census)
Below is a charted comparison of the usage of the girl name Mireille and affiliated names. Prominent varying forms of Mireille (#unlisted) ranked in the Top 1000 are Mira (#613 a year ago), Mireya and Myra (#638). These girl names were at the peak of their popularity during 1880-1889 and are almost as popular today, but with the forms Mireya and Myra becoming less fashionable. Mira (#613) is the most fashionable baby name in this compilation. (2014 Birth Statistics)
A suggested similar baby name is Marelle. This name tends to be less frequently used than Mireille.