National League South 2016-17

The division will consist of 22 clubs.

The following 5 clubs left the National League South before the season -
 * Basingstoke Town, relegated to the Southern Football League Premier Division
 * Havant & Waterlooville, relegated to the Southern Football League Premier Division
 * Hayes & Yeading United, relegated to the Isthmian League Premier Division
 * Maidstone United, promoted to the National League
 * Sutton United, promoted to the National League

The following 5 clubs joined the National League South before the season -
 * East Thurrock United, promoted as play-off winners from the Isthmian League Premier Division
 * Hampton & Richmond Borough, promoted as champions from the Isthmian League Premier Division
 * Hungerford Town, promoted as play-off winners from the Southern Football League Premier Division
 * Poole Town, promoted as champions from the Southern Football League Premier Division
 * Welling United, relegated from the National League