Thomas Holt (14 November 1811 – 5 September 1888) was an English-born Australian pastoralist, company director and politician.

Holt invested extensively in pastoral land and by 1860 had acquired more than 3 million acres (12,000 km2) in New South Wales and Queensland.

[2] After building a gothic stone mansion, "The Warren", on land overlooking the Cooks River in Marrickville, Holt stocked the grounds with imported European rabbits for breeding and hunting, alpacas, llamas and salmon.

Throughout his political career he campaigned for education, gaol and immigration reform and spent a small fortune supporting Henry Parkes' "Empire" newspaper.

[3] However, Holt was one of the first to attempt to replace unsustainable dredge harvesting of oysters with a sustainable method of aquaculture.

He died at his home "Halcot" in Bexley, Kent, on 5 September, after completing his book, 'Christianity, or the Poor Man's Friend'; and was buried at Abney Park Cemetery.