David Cleghorn Hogg JP (1840 – 22 August 1914) was a Protestant businessman and politician, originally from Scotland, but established resident in Victoria Park, Derry, County Londonderry.

David Hogg and his partner, Charles Mitchell, built a five-storey shirt factory in Great James Street in 1898.^[1] since converted into apartments.^[2] He became a magistrate.^[3] On 7 January 1911, he was appointed Lord Lieutenant of County Londonderry.^[4] He remained Lord Lieutenant until his death.

James Hamilton, Marquis of Hamilton succeeded to the Dukedom of Abercorn, resulting in the 1913 Londonderry City by-election. Hogg was nominated as a Liberal and received the support of the Catholic clergy, despite his religion.^[5]

He defeated the Unionist candidate Hercules Arthur Pakenham by 57 votes. According to Hogg's sole speech in the House of Commons, his election address declared that he was a Liberal in favour of Home Rule for Ireland, but he had not canvassed for votes.^[6] His victory at Londonderry meant that there were a majority of Ulster MPs (17 to 16) who supported the Liberal government.^[7]

Hogg died on 22 August 1914, leading to the 1914 Londonderry City by-election. He was the last Liberal MP elected in Ireland in a contested election; his successor Sir James Brown Dougherty was the last such elected, but he ran unopposed.^[8]