Walter Arthur Harrex Howarth (14 March 1882 – 12 July 1958) was an Australian politician who represented the Maitland for the United Australia Party (1932—1945) and the Liberal Party (1945—1956).
Howarth jnr Married Edith Letitia Margaret Langlands on 3 February 1906 at Lidcombe and had five children through their marriage: three daughters and two sons.
He contested the New South Wales Lower House seat of Maitland for the United Australia Party and won election on 11 June 1932.
Whilst a member of Parliament Howarth was party Whip from 1941 until 1946 and was Deputy Leader of the New South Wales Division of the Liberal Party from 1946 until 1954 under Leader Sir Vernon Treatt.
His funeral was held at Beresfield crematorium from Mackay Memorial Presbyterian church ministers at Rutherford.