Young creature, pup, or coal
Collan is a rare variant of the Gaelic name Colin or the English name Collin. It likely derives from the Gaelic 'cailean', meaning 'young creature' or 'pup', though it is sometimes associated with the English surname meaning 'son of Cole' or 'coal'.
Fewer than 5 boys were named Collan in 2025.
US births per 5-year period, 1990–present (SSA data).