James Montgomery Gilmour (4 January 1881 – 18 December 1918) was an Irish-born New Zealand rugby league footballer who played in the 1910s.
He played at representative level for New Zealand (non-Test matches), and Wellington, as a centre.
Prior to leaving he scored 5 tries for New Zealand against Auckland along with a conversion.
Gilmour served as a private with the New Zealand Expeditionary Force in World War I.
He sailed from New Zealand with the 43rd reinforcements on 17 August 1918 and died of pneumonia at Tidworth Hospital, Wiltshire, England on 18 December 1918.