James Crosskill Mackintosh (1 February 1839 – 8 May 1924) was a Canadian banker, stockbroker, and political figure in Nova Scotia who served as Mayor of Halifax.

James Crosskill Mackintosh was born on 1 February 1839 in Halifax, Nova Scotia, Canada.

[2] His father emigrated from Inverness, Scotland, while his mother, Mary Catherine Crosskill, was born of Scottish descent in Nova Scotia.

He joined the Bank of Nova Scotia as a clerk, starting his apprenticeship as an assistant cashier in 1855.

[5] The firm was known as Almon & Mackintosh, Bankers and Brokers with offices at 39 Tower Road before relocating to 166 Hollis Street.

[5] The banker and general financial agent served on the executive committee for the Halifax Chamber of Commerce in 1878.

[13] As an alderman, he was a driving force behind assessment reforms and successfully introduced a better tax collection and accounting system in City Council.

[15] As mayor, he initiated public works projects, including the foundation of the Halifax Dry Dock and the renovation of Grand Parade.

[1] J.C. Mackintosh was appointed to the international committee of the Halifax Young Men's Christian Association in July 1886.

[1] Named vice president of the Victoria School of Art and Design (now NSCAD) in 1888, he held the position for one term before continuing as a director and acting as an auditor in 1897.

[19] A longtime supporter of the Halifax School for the Blind, Mackintosh was named a benefactor in 1892 after a decade on the board of directors.

[26] In 1914, Mackintosh held several prominent business positions which included president of Starr Manufacturing Co. and a director of both Eastern Trust Co. and St. Croix Lumber Co.[5] He retained control of his banking business until 1922, when he was forced to transfer control to his son A.F.