David Tisdale, PC (September 8, 1835 – March 31, 1911) was a Canadian politician.Born in Charlotteville Township, Upper Canada, the son of Ephraim Tisdale and Hannah Price, he was educated at the Simcoe Grammar School and called to the Ontario bar in 1858. He was made a Queen's Counsel in 1872. He served in the Canadian Militia at the time of the Trent Affair in 1861, was promoted Captain in 1862 and at Niagara in 1865. He also did service during the Fenian raids in 1866.