Hewitt Lake may refer to:
Places Hewitt Lake (Black River-Matheson), a lake in Black River-Matheson, Ontario Hewitt Lake (Michaud Township, Cochrane District), a lake in Cochrane District, Ontario Hewitt Lake (Kenora District), a lake in Kenora District, Ontario Hewitt Lake National Wildlife Refuge, a protected area in Montana Hewitt Lake (Arkansas), see List of lakes in Logan County, Arkansas Hewitt Lake (Montana), see List of lakes in Phillips County, Montana Hewitt Lake (Washington), a lake in Washington
Other uses Hewitt Lake (microarchitecture), a code name for a processor microarchitecture developed by Intel used by Xeon D SoC