Pine tree or barrel maker
Kieffer is a German surname-turned-given name with two primary occupational roots. It most commonly derives from the Middle High German word 'kien' meaning pine tree, referring to someone who lived near a pine forest, or from 'kufer' meaning cooper or barrel maker.
Fewer than 5 boys were named Kieffer in 2025.
US births per 5-year period, 1990–present (SSA data).
Emmy-winning actor known for the series 24
Professional basketball player
