William Nixon (1803–1900) was a Scottish minister of the Free Church of Scotland who served as Moderator of the General Assembly in 1868/69.
[4] In 1833 he was translated to St John's Church in Montrose to replace the Rev Thomas Liddell.
[7] In 1868 he succeeded Rev Robert Smith Candlish as Moderator of the General Assembly, the highest position in the Free Church.
[1][9] His position at St Johns Free Church was filled by Rev George S Sutherland.
Children from the first marriage included John Nixon (1836–1886) Free Church minister of Barrhill, South Ayrshire.