Lawrence Arthur Adamson, CMG, (20 April 1860 – 14 December 1932) was a schoolmaster of Wesley College, Melbourne, Australia.
Lawrence Adamson was born at Douglas, Isle of Man the second son of Lawrence William Adamson.LL.D., Grand Seneschal of the IoM and his wife Annie Jane née Flint. In 1866 the family went to Newcastle-on-Tyne where his father served as High Sheriff of Northumberland in 1900. At fourteen years of age Lawrence went to Rugby School where he educated in the Classics, and represented his school at football. At the University of Oxford he read Classics and Jurisprudence, taking the degree of MA, before being called to the Bar in 1885. Adamson, suffering from a bad attack of pleurisy, was advised to live in a warmer climate. On 20 December 1885 emigrated to Australia, to practise at the Sydney Bar, but the humidity in summertime did not suit his condition, so he moved to Melbourne.
Adamson applied for admission to the Melbourne Bar, and while waiting occupied himself with private coaching; in January 1887 was appointed senior resident master at Wesley College, Melbourne under Arthur Way. He also became sports master and chairman of the games committee, and, with James Cuthbertson of Geelong Grammar School, helped to frame a code of rules for inter-school athletics. In 1892 he became second master and was also resident tutor and lecturer at Trinity College. In 1893 he became resident tutor at Trinity College (University of Melbourne) and until 1896 lectured there in the evenings while teaching at Wesley by day. In 1898 he joined Otto Krome as joint-headmaster of the University High School. Four years later he was appointed headmaster of Wesley College after he indicated he would be responsible financially for the school's growth. Inheritances had made Adamson a wealthy man.