What is Molly short for?
Molly is short for Margaret and Mary. In 2025, 1,601 girls in the United States were given Molly as their full name, with nothing longer behind it, according to Social Security records.
The names behind Molly
Each count is the number of children given that name in the United States in 2025, from US Social Security records. A name given to fewer than five children in a year is left out of the published file.
Margaret Greek origin
Molly from Margaret: Irish warmth, shared with Mary.
2,436 girls named Margaret in 2025
Mary Hebrew origin
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Molly from Mary: the traditional pet form, a classic on its own.
2,230 girls named Mary in 2025