Lydia Byam (baptized 1772) was a botanical illustrator known for her works depicting plants from the Caribbean. Byam's career flourished during the period between 1797 and 1800. She published two works A collection of exotics, from the Island of Antigua (1797) and Fruits of the West Indies (1800) respectively. These are important for the role they played in garnering interest in botany of the Caribbean islands and the dietary and medicinal benefits they offered.