Ezra M. Hamilton (1833–1914) was a pioneer known for his role in the development of Antelope Valley, California. In 1896 he discovered gold in Rosamond, California and began a successful mining operation that spurred growth in the area. He founded and developed the nearby town of Willow Springs. He was also an inventor, farmer, mason and businessman, served on the Los Angeles Common Council, volunteered in the Rogue River Wars and served two years in the Union Army.