Charles Alfred Crofts (11 July 1871 – 25 March 1950) was an Australian trade unionist.
Born at Bethnal Green in England to general dealer James Crofts and Ann Rebecca, née Luxton, Crofts entered the workforce at the age of twelve, leaving school to work in a sheet metal factory and joining the Tinsmiths, Braziers and Gas Meter Makers' Society of London.
He and his family moved to Melbourne in 1898, where Crofts became a member of the Sheet Metal Workers' Union (SMWU), serving as vice-president (1907) and president (1908–09).
He defied his employer, the Metropolitan Gas Company, to attend a union meeting in Sydney in 1914 and was subsequently dismissed, but soon after won the position of secretary to the Gas Employees' Union, a paid position, winning the national secretaryship two months later.
A leading workers' advocate during the Depression, he retired from the secretaryship in 1943 to concentrate on his presidency of the Gas Employees' Union.