Son of Kel; possibly related to the island of Kelsay.
Kelsen is a rare patronymic surname of Scandinavian or Germanic origin, likely meaning 'son of Kel'. It may also be a variant of the Scottish name Kelsay, referring to 'Cael's island'. In modern usage, it is often chosen for its similarity to established names like Kelsey or Jensen.
Fewer than 5 boys were named Kelsen in 2025.
Influential 20th-century legal philosopher and jurist
US births per 5-year period, 1990–present (SSA data).
