David Martineau (1827-1911) was a solicitor and local politician. He was a director of Messrs Martineau and Company Limited, Carey Street, Lincoln's Inn Fields. Active in Liberal politics, and a resident of Clapham, he was chosen by the Progressive Party to defend the seat vacated by Fred Henderson in February 1893 when he was imprisoned. Martineau was defeated when the Moderate Party gained the seat at the by-election held in April 1893. He did become a member of the county council later that year when he was elected to fill a vacancy as alderman in November 1893, serving until March 1895.