Is it possible to change Automation name once the Automation is published? Follow

Yes, You can change the Automation name once the Automation is published Live.

To do so, 

• Navigate to the Outreach Icon from the left menu bar
• Click on the Automation Journeys 

• Find the Automation Journey and click on the Name

• Click on the Pencil Icon on the top left.
• Change the name under the Automation name and click on Save.