Jack Todd may refer to:
- John (Jack) Todd (1911–2007), Northern Irish mathematician and pioneer in the field of numerical analysis
- Jack Todd (journalist) (born 1946), sports columnist for the Montreal Gazette
- Jack Todd (footballer, born 1881) (1881–1962), Australian rules footballer for Carlton
- Jack Todd (footballer, born 1879) (1879–1960), Australian rules footballer for St Kilda and South Melbourne