Investigators believe a car was travelling north on Bell Vue Avenue when the driver lost control and struck a power pole around 2.15am.
The driver, a woman aged in her early 30s, died at the scene.
Her passenger, a young boy believed to be primary school aged, was taken to the Geelong Hospital with minor injuries.
Anyone with any information about the crash can contact Crime Stoppers on 1800 333 000 or visit www.crimestoppers.com.au.
CFA crews from Belmont, Geelong and Highton responded to the incident.
(Details via Victoria Police News)