| William Funnell | |
| Honorific-Suffix: | ISO |
| Office1: | Secretary of the Department of Labour and National Service |
| Term Start1: | 8 March 1946 |
| Term End1: | 30 January 1952 |
| Birth Date: | 8 June 1891 |
| Birth Place: | Goulburn, New South Wales |
| Death Place: | Castlecrag, Sydney, New South Wales |
| Occupation: | Public servant |
| Nationality: |  Australian |
William Funnell ISO (8 June 189125 October 1962) was a senior Australian public servant, best known for his time as head of the Department of Labour and National Service between 1946 and 1952.
Funnell was born 8 June 1891 in Goulburn, New South Wales to parents William Funnell and Jessie Anne Funnell, née Worchurst. He attended South Goulburn Public School before joining the New South Wales Government Railways and Tramways office in 1906 as an apprentice clerk.
In March 1946, Funnell was appointed as Secretary of the Department of Labour and National Service.
Funnell died on 25 October 1962 in Castlecrag, Sydney.
Funnell was made a companion of the Imperial Service Order in June 1954 in recognition of his public service.