Can I clone a form?

Yes it's possible to clone jotforms.

You can choose from the following three methods to clone a jotform:

#1 - http://www.jotform.com/help/42-How-to-Clone-an-Existing-Form-from-a-URL

#2 - http://www.jotform.com/help/27-How-to-clone-an-existing-form-from-your-account 

#3 - http://www.jotform.com/help/28-How-to-Clone-an-Embedded-Form-from-a-Webpage 

However, do be advised that if you are attempting to copy a form built by another user it may be unclonable if marked as "private" by the user except for the existing ones in our Templates.