There have been two baronetcies created for persons with the surname Lucas-Tooth, both in the Baronetage of the United Kingdom.
The Lucas-Tooth Baronetcy, of Queen's Gate in the Royal borough of Kensington, and of Kameruka in the county of Auckland (New South Wales), was created in the Baronetage of the United Kingdom on 26 July 1906 for the brewer Robert Lucas-Tooth.
Born Robert Tooth, he had assumed by Royal licence the additional surname of Lucas (which was that of his maternal grandfather) in 1904.
He was the son of Major Hugh Warrand and his wife Beatrice Maude, eldest daughter of the first Baronet of the 1906 creation.
Born Hugh Warrand, he assumed by Royal licence the surname of Lucas-Tooth in lieu of his patronymic in 1920.