Duncan Spender
| Duncan Spender | |
|---|---|
| Senator for New South Wales | |
| In office 20 March 2019 – 30 June 2019 | |
| Preceded by | David Leyonhjelm | 
| Personal details | |
| Born | 18 June 1975 Brisbane, Queensland, Australia | 
| Political party | Liberal Democrats | 
| Other political affiliations | Independent | 
Duncan Peter James Spender (born 18 June 1975) is a former Australian politician. He briefly served as a Senator for New South Wales in 2019, filling a casual vacancy caused by the resignation of Senator David Leyonhjelm of the Liberal Democrats. He had previously been Leyonhjelm's chief of staff.