Thank you for your response. My issue is that under a single Gmail account, I have multiple calendars. When integrating with Google Calendar, Odoo syncs only the primary one without giving me the option to sync or select the others.

Right now, Odoo’s built-in Google Calendar integration only supports syncing the primary calendar linked to your Google account. Secondary or shared calendars (like Work, Family, etc.) aren’t selectable through the standard setup.

If you need multiple calendars, you have two main options:

1. Create separate Google API credentials for each calendar you want to sync, then connect them to different Odoo users or environments.
2. Use the Google Calendar API directly in a small custom module, the API lets you list all calendars under one account and sync events individually.

A few community modules on GitHub also extend Odoo’s native connector to handle multiple calendars, but they require some configuration.

For now, if your setup depends heavily on multiple Google calendars, the safest approach is still to sync the main one to Odoo and use Google’s calendar sharing for visibility. 

Seems there is no answer on how to sync multiple calendars from Google to odoo. Is there any progress. Without this ability the odoo calendar is pretty useless and wondering how others are handling the situation, or nobody is using odoo calendar?

Hi,

Please refer to this forum answer:

https://www.odoo.com/forum/help-1/how-to-handle-multiple-google-calendars-235431

Hope it helps