What is Jack short for?
Jack is short for John and Jackson. In 2025, 8,748 boys and 6 girls in the United States were given Jack as their full name, with nothing longer behind it, according to Social Security records.
The names behind Jack
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.
John Hebrew origin
Jack from John: the traditional pet form, long a name of its own.
6 girls and 8,027 boys named John in 2025
Jackson English origin
Which of these fits YOUR family? →
Jack from Jackson: the timeless classic.
15 girls and 6,582 boys named Jackson in 2025