The 1st Machine Gun Squadron was a sub-unit of the New Zealand Military Forces during the First World War. It was part of the New Zealand Mounted Rifles Brigade, and served with them in the Sinai and Palestine Campaign from 1916 to 1918.

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.