Allendale may refer to:
- In Australia
- Allendale, Victoria, town, population 330
- In Canada
- Allendale, Edmonton, a neighbourhood
- Allendale Road, Edmonton
- In England
- Allendale, Northumberland
- In the United States
- Allendale, Fremont, California, part of Fremont, California
- Allendale, Oakland, California, former community now part of Oakland, California
- Allendale, Illinois, village
- Allendale, Indiana, unincorporated community
- Allendale, Michigan, census-designated place
- Allendale Charter Township, Michigan
- Allendale, Missouri, city
- Allendale, New Jersey, borough
- Allendale, South Carolina, town
- Allendale County, South Carolina
- The former name of Kissimmee, Florida, before its incorporation in 1883
Allendale may also refer to:
- Allendale, a version of the Intel Core 2 microprocessor