| Jason O'Brien | |
| Office: | Deputy Speaker and Chairman of Committees of the Queensland Legislative Assembly |
| Term Start: | 21 April 2009 |
| Term End: | 14 May 2012 |
| Predecessor: | John English |
| Successor: | Mark Robinson |
| Constituency Am1: | Cook |
| Assembly1: | Queensland Legislative |
| Term Start1: | 7 February 2004 |
| Term End1: | 23 March 2012 |
| Predecessor1: | Steve Bredhauer |
| Successor1: | David Kempton |
| Birth Date: | 23 November 1969 |
| Birth Place: | Sydney, New South Wales, Australia |
| Birthname: | Jason Danial O'Brien |
| Nationality: | Australian |
| Party: | Labor |
| Occupation: | Electrician, Research officer |
Jason Danial O'Brien (born 23 November 1969) is an Australian politician.
Born in Sydney, he served in the Royal Australian Navy from 1986 to 1990 as an electrician and was a Cairns City Councillor from 2000 from 2004. A member of the Labor Party, he was electorate officer to Steve Bredhauer, member for Cook and Transport Minister in the Beattie government. In 2004, he was elected to the Legislative Assembly of Queensland, succeeding the retiring Bredhauer in the seat of Cook. Following the 2009 election, he was elected Deputy Speaker. He lost his seat at the 2012 election.[1]
O'Brien was a teacher at Smithfield State High School, in Smithfield, Queensland.[2]