Hallet is a boy name. It last appeared in U.S. Social Security records in 1948. Hallet first appears in the data in 1916 and reached its peak in 1916 (8 births). The chart below shows how the name has risen and fallen over time.
How popular is Hallet? (U.S. births per year)
U.S. births per year, 1916–1948 · hover or tap for the count and national rank · source: U.S. Social Security Administration