January 13 – Sentenced conspirators of the Tavora affair are executed
January 29 – After a month's absence, Elizabeth Canning returns to her mother's home in London and claims that she was abducted. Following criminal trial causes uproar.
Publication of Species Plantarum by Linnaeus on 1 May, adopted by the International Code of Botanical Nomenclature as the formal start date of the scientific classification of plants