Is there any way to display a action's name different for different users.

Yes, it is possible.

You have to implement your own DataUtility.

Example in ProjectLink: 

• com/ptc/netmarkets/actionitem/actionitem.datautilities.properties.xconf
• netmarkets/jsp/actionitem/attributes.jsp

It should be possible to get userID from context bean, but I didn't check.

Or you can create duplicate actions with different resource bundles and filter them depend on user access...