Marvin Pierce Bush (born October 22, 1956) is the youngest son of George H. W. Bush and Barbara Pierce, and brother of George W., John (Jeb), Neil and Dorothy. He is named for his maternal grandfather. He has a wife, Margaret, and two children: a daughter, Marshall, and a son, Walker.

Marvin graduated from Woodberry Forest School in 1975, and was a director of Securacom a.k.a. Stratesec from 1993 until fiscal year 2000.