William Cooley (1783–1863) was one of the first American settlers, and a regional leader, in what is now known as Broward County in the state of Florida. His family was killed by Seminoles in 1836, during the Second Seminole War. The attack, known as the "New River Massacre", caused immediate abandonment of the area by whites.
- Occupation
- merchant, justice of the peace
- Citizenship
- United States
- Born
- 1783
- Died
- 1863
