Meaning & Origin
A diminutive of the female given name Elizabeth and Isabel.
Libby is a girl's and boy's baby name of Hebrew origin, a traditional nickname for Elizabeth and Isabel, from Hebrew Elisheba, meaning 'my God is an oath' or 'pledged to God.'
Once relegated strictly to the role of a nickname, Libby has emerged as a charming standalone name in its own right. It has an irresistible mix of old-fashioned sweetness and modern accessibility — think Laura Ingalls Wilder's era but with a contemporary freshness. In the UK, it's been a formal name for generations; in the U.S., it's having a quiet revival.