Terrace Street Chief of Staff is the most senior political appointee in the office of the Prime Minister, acting as a senior aide to the Prime Minister of Wiltshire. The holder of the office retains a highly powerful, non-ministerial position within the government of Wiltshire.
The current Chief of Staff is Owen Lassiter, who was appointed by Prime Minister Beau Martin.
| Chief of Staff | Term in office | Party | Prime Minister | Government(s) |
|---|---|---|---|---|
| Josh Carrow | 19 July 3009 until 28 January 3010 | National Coalition | Jaresh Inyo | Jaresh Inyo Caretaker Ministry
Second Jaresh Inyo Ministry |
| Linda Martina | 28 January 3010 until 1 April 3010 | Socialist | Thomas Shore | Shore Ministry |
| Ned Waterloo | 1 April 3010 until 15 July 3010 | |||
| Josh Carrow | 15 July 3010 until 3 May 3011 | Conservative | Jaresh Inyo | Third Jaresh Inyo Ministry
Fourth Inyo Ministry |
| Karen Finch | 3 May 3011 until 1 June 3011 | |||
| Joel McCair | 1 June 3011 until 3 January 3013 | Edward Jellico | First Jellico Ministry | |
| George Hart | 3 January 3013 until 5 March 3013 | Second Jellico Ministry | ||
| Venessa Nesbitt | 5 March 3013 until 29 May 3013 | Socialist | Renly Stork | Stork Ministry |
| Walt Krussteg | 29 May 3013 until 4 November 3013 | Conservative | Martin Banks | First Banks Ministry |
| Samuel Vorr | 4 November 3013 until 9 January 3014 | Second Banks Ministry | ||
| Owen Lassiter | 9 January 3014 until 25 January 3015 | |||
| Samuel Vorr | 25 January 3015 until 18 August 3015 | David Loynd | First Loynd Ministry | |
| Second Loynd Ministry | ||||
| Morgan Morris | 18 August 3015 until 10 January 3016 | |||
| Third Loynd Ministry | ||||