Aldine is a census-designated place (CDP) in unincorporated central Harris County, Texas, United States, located within the extraterritorial jurisdiction of Houston. The population was 15,999 at the 2020 census. The community is located on the Hardy Toll Road, Union Pacific Railroad, and Farm to Market Road 525. The Aldine area is near Houston's George Bush Intercontinental Airport, the second largest aviation facility in Texas.

MacArthur High School, located at 4400 Aldine Mail Route in East Aldine, unincorporated Harris County, Texas, United States, north of Houston, with a ZIP code of 77039. The school is named in honor of Douglas MacArthur.