| Harold Mason | |
| Honorific-Suffix: | KC |
| Constituency Mp: | Wollahra |
| Parliament: | New South Wales |
| Predecessor: | Sir Daniel Levy |
| Successor: | Vernon Treatt |
| Term Start: | 26 June 1937 |
| Term End: | 24 February 1938 |
| Birth Date: | 28 January 1890 |
| Birth Place: | Hunters Hill, New South Wales, Australia |
| Death Date: | 8 May 1949 |
| Death Place: | Canberra, Australian Capital Territory, Australia |
| Nationality: | Australian |
| Spouse: | Marjorie Frances Macken |
| Party: | Independent UAP |
| Children: | Three sons, one daughter |
| Alma Mater: | University of Sydney |
| Profession: | Lawyer and politician |
Harold Harvey Mason KC (28 January 1890 – 8 May 1949) was an Australian politician who represented the Electoral district of Woollahra from 26 June 1937 until 24 February 1938 as an Independent United Australia Party MP.[1] Mason was the son of William Henry Mason, shipping master of the Port of Sydney, and Sarah Jane Dunn. He married Marjorie Frances Macken on 18 December 1914 and had one daughter and three sons with each other. He died on 8 May 1949 in Canberra, Australian Capital Territory, Australia. His funeral was held at Northern Suburbs crematorium from St Mark's Church of England, Darling Point, Sydney.[1]
Mason was admitted as a King's Counsel in 1939.