William Mellor (1888–1942) was a left-wing British journalist.
Mellor joined the Daily Herald in 1913 as a journalist, and was imprisoned during the First World War as a conscientious objector, returning to the Herald on his release. A Guild Socialist during the 1910s, he worked closely with G. D. H. Cole, founding the National Guilds League with him in 1915. He was a founder-member of the Communist Party of Great Britain in 1920, but resigned in 1924. He became editor of the Herald in 1926, succeeding George Lansbury when the Trades Union Congress took over the paper, and was fired in 1930 soon after Odhams Press took half-ownership with the TUC. He was the first editor of Tribune in 1937-38 and was sacked after falling out with Stafford Cripps over the latter’s proposals for a Popular Front of socialist and non-socialist parties against fascism. For the last 10 years of his life, though married with a family, he conducted an affair with the young Barbara Castle.
William "Billy" Mellor (date and place of birth unknown) was a footballer who played as a defender.
Having played as a young amateur for teams in Sheffield, Mellor was spotted by Sheffield United and offered a professional contract in the summer of 1892. United had been accepted into Football League Division Two for the following season and Mellor struggled to meet the standard required, making only four league appearances for the club.
Mellow was transferred to local rivals The Wednesday in December 1893 where he spent a further eighteen months, but only managed one more league appearance. From there he moved to Loughborough Town in May 1895, whom he also represented in The Football League.
Mellor then dropped out of league football and had spells with Oldham County, Swindon Town and Wigan County before finishing his career with Darwen.