George Willis Pack (born 1831, Peterboro, New York; d. August 31, 1906, Southampton, Long Island, New York) was a second-generation timberman on Michigan's Lower Peninsula. Building on his father's legacy, over the course of several decades, Pack successfully developed his timber businesses, becoming one of Michigan's first millionaires. His son, Charles Lathrop Pack, and his grandson, Randolph Greene Pack, carried on the family tradition.