The New Zealand Mounted Rifles Brigade was a brigade of the New Zealand Army during the First World War. Raised in 1914 as part of the New Zealand Expeditionary Force, it was one of the first New Zealand units to sail for service overseas.

The Australian and New Zealand Mounted Division was a mounted infantry division of the British Empire during the First World War. The division was raised in March 1916 and was assigned to the I ANZAC Corps. On establishment, it consisted of four brigades comprising three Australian Light Horse and one New Zealand mounted rifles, supported by British horse artillery. In 1917, one of the Australian brigades was replaced by a British yeomanry brigade. After April 1917, the standard order of battle was reduced to two Australian brigades and one New Zealand brigade, although the Imperial Camel Corps Brigade and other British mounted brigades were temporarily attached several times during operations.