| Honorific-Prefix: | The Honourable |
| Frederick Forbes | |
| Office1: | Speaker of the Queensland Parliament |
| Term Start1: | 7 November 1871 |
| Term End1: | 1 September 1873 |
| Predecessor1: | Arthur Macalister |
| Successor1: | William Henry Walsh |
| Constituency1: | West Moreton |
| Constituency Am2: | Ipswich |
| Assembly2: | Queensland Legislative |
| Term Start2: | 10 May 1860 |
| Term End2: | 30 May 1863 |
| Predecessor2: | New seat |
| Successor2: | Ratcliffe Pring |
| Alongside2: | Patrick O'Sullivan, Arthur Macalister |
| Constituency Am3: | Warrego |
| Assembly3: | Queensland Legislative |
| Term Start3: | 25 March 1865 |
| Term End3: | 8 July 1867 |
| Predecessor3: | New seat |
| Successor3: | Graham Mylne |
| Constituency Am4: | West Moreton |
| Assembly4: | Queensland Legislative |
| Term Start4: | 28 September 1868 |
| Term End4: | 18 November 1873 |
| Predecessor4: | Joshua Peter Bell |
| Successor4: | Seat abolished |
| Alongside4: | George Thorn, Jr., Samuel Hodgson, John Ferrett |
| Birth Date: | 30 September 1818 |
| Birth Place: | Liverpool, New South Wales |
| Death Place: | Ipswich, Queensland |
| Nationality: | Australian |
| Spouse: | Margaret Milner |
| Occupation: | Storekeeper, Grazier |
Frederick Augustus Forbes (30 September 1818 – 9 July 1878) was a politician in colonial Queensland and Speaker of the Legislative Assembly of Queensland.[1]
Forbes was born on 30 September 1818 in Liverpool, Sydney, New South Wales, to Francis Ewen, a merchant, and his wife Mary Ann Taboweur.[1] He attended William Cape's school and The King's School, Parramatta, before spending several years at sea. When his father died he took over his father's store in Liverpool in 1842 before marrying Margaret Milner in 1844.
Forbes soon moved to Ipswich where he opened another store and became involved in the Queensland Separation movement. Forbes became involved in politics and in 1860, along with Arthur Macalister and Patrick O'Sullivan, was elected to the new seat of Ipswich in the Queensland Legislative Assembly which he served until his defeat in 1863.[2] He later served in the seat of Warrego from March 1865 to June 1867 and the seat of West Moreton from September 1868 until his retirement in November 1873. During this final term, Forbes spent two years as Speaker from 1871 to 1873.
Though Forbes declared bankruptcy in 1870 because of the 1866-67 money crisis, he managed to quickly rebuild and was able to continue investing in businesses until his death. Forbes died as a result of an accident at Ipswich, Queensland, 9 July 1878 at the age of 59 and was survived by eleven out of his seventeen children.