Rowberry arrives at Rodney Parade as the permanent successor to Michael Flynn, who left the Exiles earlier this month following four years in charge.
The 36-year-old is no stranger to County, having been a youth player there, and a one-time coach in the Newport academy. His first game in charge is set to be Saturday’s League Two trip to Bristol Rovers.
Wayne hatswell, who has been in interim charge while the club conducted their managerial search, will again lead the team again on Tuesday for the visit of carlisle, with Rowberry given a watching brief from the stands.
“The appointment comes after an extensive search to find the right person to take Newport County AFC forward.”