Motorcycling New Zealand, formerly The New Zealand Auto-Cycle Union, is the governing body for motorcycle sport in New Zealand.
The New Zealand Auto-Cycle Union commenced operation in 1916 through the union of separate North and South Island Unions. It was re-named Motorcycling New Zealand (MNZ) in 1994. In 2016 it reported having 3,589 members, and hosting 568 events attended by 35,798 riders and over 100,000 spectators.