This marks the second AVO to be taken out against the actor, after he was first ordered to stay away from Ms Little's new husband David Robertshaw over another alleged incident.
Police issued the AVO after Ewing allegedly assaulted Mr Robertshaw during the custody exchange of his and Ms Little's son, on October 21.
That matter is due to be heard in Manly Local Court on Tuesday, Nov. 6.
Ms Little and Ewing separated in December 2015, and it is understood the actor now has custody of his son on Wednesday and Saturday nights, according to Daily Mail.
The alleged incident came just days before Ms Little and Mr Robertshaw's wedding.
The couple tied the knot in an intimate ceremony at Strath Creek, in central Victoria, last Sunday.