William Henry Gocher (20 March 1856 – 18 August 1921) was an Australian artist and advocate for bimetallism who campaigned to lift the ban on daylight sea bathing in Sydney.
He attended St John's College at Hurstpierpoint, converted to Roman Catholicism and emigrated to Australia around 1872.
Gocher admired William Jennings Bryan and supported Federation, believing it would shield Australia from the "jeers of Jews, capitalists and the press".
As part of a campaign against the ban on daylight bathing, he announced his intention to swim at midday in October 1902; the police took him away after he criticised their laxness, and he was not charged with any crimes.
Having been devastated by one of his sons' death at Messines, he suffered a stroke in 1917 and died in 1921 of arteriosclerosis and chronic nephritis.