2018–19 Wessex Football League Division One

Division One will remain at 19 clubs after Christchurch, Andover New Street and Tadley Calleva were promoted to the Premier Division, and Weymouth Reserves left the league. Four new clubs joined:


 * Amesbury Town, relegated from the Premier Division.
 * Andover Town, demoted from the Premier Division.
 * Newport (IOW), relegated from the Premier Division.
 * Petersfield Town, relegated from the Premier Division.