A bunke (分家) is a branch family established by a collateral of the honke (the line descended through the eldest male) in Japan.

• Ie (Japanese family system)
• Japanese family structure
• Koseki

• "honke and bunke". Japan: An Illustrated Encyclopedia. Tokyo: Kodansha Ltd. 1993. pp. 558–559. OCLC 27812414. ISBN 4069310983 (set), ISBN 4-06-206489-8 (volume 1).