Oakbrook, Oak brook or Oak Brook may refer to:
Places United States Illinois Oakbrook Terrace, Illinois, a city in DuPage County, a suburb of Chicago Oak Brook, Illinois, a city in DuPage County, a suburb of Chicago Oakbrook Center, a shopping mall in Oak Brook, Illinois
Other areas Oakbrook, Kentucky, a census designated place in Boone County Oakbrook Neighborhood, in Summerville, South Carolina
Schools Oakbrook Elementary School, in Clover Park School District, Washington Oakbrook Elementary School and Oakbrook Middle School, in Dorchester School District Two, South Carolina Oakbrook Elementary School, in Parkway School District, Missouri Oakbrook House, former mansion of steel baron Mark Firth, now part of Notre Dame High School
Other uses Henry Brandon, Baron Brandon of Oakbrook (1920–1999), British judge