Aka Aka is a rural locality on the Aka Aka Stream, a tributary of the Waikato River. It lies about 7 km southeast of Waiuku. In the 2013 New Zealand census, the meshblock containing Aka Aka had a population of 102 people. The area was originally a swamp, drained in the late 19th century. The New Zealand Co-operative Dairy Company has a factory in Aka Aka, built in 1901. The current Aka Aka Hall, opened in 2002, contains a Roll of Honour commemorating people from the area killed in the first and second world wars. The hall replaced one which was described as a "splendid new hall" in 1912.