Frederick James Dean (5 November 1868 – 24 April 1941) was a British trade union leader.
Frederick was educated at the Butts School before completing an apprenticeship making horse collars, then moved to Manchester to work.
He led the union through two major industrial actions, in 1912 and 1921; its financially strong position enabling it to support its members.
In 1922, he was elected to the executive of the Miners' Federation of Great Britain, but he resigned all his trade union posts the following year, due to poor health.
Over the next few years, he ran a new tobacconist business and served as a magistrate but, by the mid-1930s, he was confined to bed, ultimately dying in 1941.