Ernest Percival Henshaw (4 September 1870 – 11 June 1950) was a Labor Party politician who became a Member of the Western Australian Legislative Assembly.
By 1892 he was working as a carpenter and living in Clifton Hill, and on 17 August of that year he married Julia Emma Wildy.
On 24 June 1904 he was elected to the Western Australian Legislative Assembly seat of Collie on a Labor ticket.
In 1911 he was heavily involved in the design and construction of the Perth Trades Hall, but later that year he left the party over a dispute.
His grandson, David Henshaw, was a member of the Victorian Legislative Council from 1982 to 1996, representing Geelong Province.