Jeffery is a spelling variant of Jeffrey, the English form of the Norman name Geoffrey, which combines Germanic elements and is usually explained as "God's peace" or "pledge of peace". The name was a staple of mid-century America, when Jeffrey sat in the top 20 for three decades. The Jeffery spelling was at number 333 in 2000 and has declined steadily since, leaving the top 1000 around 2020 and ranking number 1556 in 2025.